Enter a word, phrase, description, or pattern above to find synonyms, related words, and more.
Concept clusters in the subject Health (Top)
Abnormal RBCs Abnormal bleeding Abnormal blood levels Abnormal discharge Abnormal proteins Abnormal respiration Abnormal substances Adipokines Adipose tissue Agglutination Aging Air or gas pressure Allergy Allergy-friendly Amniotic fluid disorders Amoebic diseases Anatomy Angiogenesis Animal diseases Animal infectious diseases Anti-aging Anti-disease treatments Antibodies Arthritis Atherosclerosis Bacteremia Bacterial taxonomy Bacterial toxins Bacteriophage Biliary tract diseases Biochemistry Biochemistry (2) Biochromes Biological morphology Biological toxins Blast cell Bleeding or hemorrhaging Blood and its components Blood cell abnormalities Blood cell disorders Blood cells Blood cells (2) Blood cells (3) Blood coagulation Blood components Blood disorders Blood disorders (2) Blood vessel formation Blue-green bacteria Body parts Body parts and their structure Body's response to stress Bone and cartilage formation Bone disorders Bone formation and development Bovine diseases in particular Brain tumors COVID-19 virus Carcinogenesis Cardiac conditions Cell Cell adhesion Cell and its components Cell biology Cell division processes Cell nucleus and cytoplasm Cell structure Cell/organ toxicant Cells in the nervous system Cells that secrete hormones Cellular Cellular differentiation Cellular eating Cellular events Cellular processes Cellular structure Cellular structures Centromeres Cephalic disorders Chem modification of molecules Cholesterol reduction Chondrocyte Chromatin Chromatin structure Coadhesive Congenital limb malformations Cough Cyst Cystic Cytology Dermatological diseases Dermatology Dermatology (2) Dermatoses Development of an embryo Development of an embryo (2) Developmental biology Different types of bacteria Different types of cells Different types of viruses Digestive motility Disease Disease (2) Dysfunction Eating Edema Egg production and development Embolism Embryology Embryology (2) Enzymatic Epithelial cells Eradicating Eradication Evolution Exocrine gland Extracting from Fever Fever (2) Fibrils Fibrin Formation of new cells Fungal taxonomy Gallbladder/bile duct diseases Gallstones Gamete production Gametogenesis Genicity Genicity (2) Germ layers Glial cell development Glucose metabolism HIV/AIDS Haematology Having a fever Having multiple cysts Headache Headache (2) Heart disease Hemagglutination Hematopoiesis Hematopoiesis (2) Hemodialysis Hepatic system Hepatology Herbal medicine Hormonal imbalance Hormone imbalances Hormone production Human/animal pox viruses Humorism Hyper-/hypo- levels Hyperlipidemia Hypo Illness Immune system Immunization Immunization against a disease Immunoassay Immunology Inflammation Inflammation (2) Inflammation of the eye Inflammation of the joints Inflammatory arthritis Influenza Inhibiting cancer cells Itis Jaundice in medical terms Joint surgery Kidney development Kidney diseases Kidney diseases (2) Kidney stones Killing or controlling pests Leprosy Leukemia Leukocytosis Leukopenia Lipid disorders Lipid interactions Lipid transporters Liposomal drug delivery Liposomes Liver Lung diseases Lymphatic system Lymphatic vessels and nodes Lymphoma Lysosomal storage diseases MPN Malaria study Malnutrition Medical conditions Medical fibrosis Medical perfusion Medical treatments Medicinal liver Medicines Melanin Meningitis Metabolomics Metastasis Molecular genetics Mucus-related conditions Muscle anatomy Muscle physiology Muscle-forming cells Musculoskeletal anatomy Mycology Mycology (2) Mycology (3) Mycology (4) Mycorrhizal fungi Mycosis Myelin-related processes Myeloid Myelopathy Myelopoiesis Neoplasms Nerve and muscle diseases Nervous system Neuroactive drugs Neuroendocrine interaction Neurological disorders Neurological disorders (2) Neurological disorders (3) Neuromuscular disorders Neuroproteins Neurotransmitters Neurotransmitters (2) Nuclear chromatin Nucleic acid interactions Ocular disorders Oncology Oncology (2) Onychopathology Oogenesis Oogenesis & fertilization Organ transplantation Organ/system toxicity Organ/tissue inflammation Osteogenesis Osteology Oxygen deprivation Oxygen levels in the body PTMs Paralysis Paralysis of the limbs Parasites Parasitic diseases Pathology Perfusion Pharmaceuticals Pharmaceuticals (2) Physiological levels Pituitary gland Plant life forms Plant morphology Plant reproduction Plant taxonomy Plant tissue Pneumonia Pollination Precursor Production of blood cells Protein study Protein-degrading enzymes Proteins Proteolytic Rare genetic disorders Rare genetic syndromes Rare genetic syndromes (2) Relaxation in the body Respiratory contagion Ribonucleic acid Root-soil system Scleroderma Semen analysis Serology Skin Skin conditions Skin diseases Skin diseases (2) Skin diseases (3) Skin diseases (4) Skin diseases (5) Skin rashes Sperm production Sperm production (2) Spore formation Spore formation (2) Spore types Study of cells Study of fungi Study of the immune system Studying proteins Studying proteins (2) Studying proteins (3) Sweating Sweating (2) Synaptic interactions Syphilis Teratology Thromboelastography (TEG) Thromboembolism Thrombosis Thrombosis prevention Toxic Toxins Toxins (2) Transfection Treating fever Trichomes in biology Tropical parasitic diseases Tumors Tumorsphere Ulcer Vaccinating against a disease Vaccination Variants of viruses Vascular anatomy Vascular physiology Vasculature Vasodilation Vasodilation (2) Vasomotor response Vector-borne parasites Viral species Viral taxonomy Virology Virus taxonomy Viruses and their study Vitellogenesis Weatherproofing Widening of blood vessels Zoology Zygosity

This subject index is an experimental OneLook feature. We've grouped words and phrases into thousands of clusters based on a statistical analysis of how they are used in writing. Some of the words and concepts may be vulgar or offensive. The names of the clusters were written automatically and may not precisely describe every word within them.

How do I use OneLook's thesaurus / reverse dictionary?

OneLook lets you find any kind of word for any kind of writing. Like a traditional thesaurus, you can use it to find synonyms and antonyms, but it's far more flexible. Describe what you're looking for with a single word, a few words, or even a whole sentence. Type in your description and hit Enter (or select a word that shows up in the autocomplete preview) to see the related words. You can order, filter, and explore the words that come back in a variety of creative ways. Here's a video which goes over some of the basics.

What are some examples?

Example searches
🔆 Find a word by describing it barrel maker
before the flood
museum guide
search for food
urge to travel
what a milliner makes
tried twice for the same crime
when cancer spreads through the body
🔆 Explore synonyms and related concepts fancy
industrial revolution
🔆 Get a list of words in some category ("type of...") type of bird of prey
type of soft cheese
type of light bulb
🔆 Find more words similar to some examples (comma-separated list) squishy,spongy,gooey
ice cream,pie,cookies
🔆 Answer basic identification questions capital of Vietnam
longest river in the world
original host of Jeopardy
🔆 Solve crossword puzzle clues, or find words if you only know some of the letters.
(Use pattern:description syntax)
??lon:synthetic fabric
c*:board game

Exploring the results

Click on any result to see definitions and usage examples tailored to your search, as well as links to follow-up searches and additional usage information when available. OneLook knows about more than 2 million different words and expressions covering every topic under the sun. Try exploring a favorite topic for a while and you'll be surprised how much new stuff there is to learn!

Ordering the results

Your results will initially appear with the most closely related word shown first, the second-most closely shown second, and so on. You can re-order the results in a variety of different ways, including alphabetically, by length, by popularity, by modernness, by formality, and by other aspects of style. Click the box that says "Closest meaning first..." to see them all. (Here's a short video about sorting and filtering with OneLook Thesaurus.)

Filtering the results

You can refine your search by clicking on the "Advanced filters" button on the results page. This lets you narrow down your results to match a certain starting letter, number of letters, number of syllables, related concept, meter, vowel sound, or number of syllables. Read more details on filters if you're interested in how they work.

I'm only looking for synonyms! What's with all of these weird results?

For some kinds of searches only the first result or the first few results are truly synonyms or good substitutions for your search word. We highlight these results in yellow. Beyond that, the results are meant to inspire you to consider similar words and adjacent concepts. Not all of the results will make sense at first, but they're all connected with your search in some way. We'd rather give you too many options than too few. If you're unsure of a word, we urge you to click on it to check its definitions and usage examples before using it in your Oscars acceptance speech or honors thesis.

What are letter patterns?

If you know some letters in the word you're looking for, you can enter a pattern instead of, or in addition to, a description. Here are how patterns work:
  • The asterisk (*) matches any number of letters. That means that you can use it as a placeholder for any part of a word or phrase. For example, if you enter blueb* you'll get all the terms that start with "blueb"; if you enter *bird you'll get all the terms that end with "bird"; if you enter *lueb* you'll get all the terms that contain the sequence "lueb", and so forth. An asterisk can match zero letters, too.
  • The question mark (?) matches exactly one letter. That means that you can use it as a placeholder for a single letter or symbol. The query l?b?n?n,  for example, will find the word "Lebanon".

  • The number-sign (#) matches any English consonant. For example, the query tra#t finds the word "tract" but not "trait".

  • The at-sign (@) matches any English vowel (including "y"). For example, the query abo@t finds the word "about" but not "abort".

  • NEW! The comma (,) lets you combine multiple patterns into one. For example, the query ?????,*y* finds 5-letter words that contain a "y" somewhere, such as "happy" and "rhyme".

  • NEW! Use double-slashes (//) before a group of letters to unscramble them (that is, find anagrams.) For example, the query //soulbeat will find "absolute" and "bales out", and re//teeprsn will find "represent" and "repenters". You can use another double-slash to end the group and put letters you're sure of to the right of it. For example, the query //blabrcs//e will find "scrabble". Question marks can signify unknown letters as usual; for example, //we??? returns 5-letter words that contain a W and an E, such as "water" and "awake".

  • NEW! A minus sign (-) followed by some letters at the end of a pattern means "exclude these letters". For example, the query sp???-ei finds 5-letter words that start with "sp" but do not contain an "e"or an "i", such as "spoon" and "spray".

  • NEW! A plus sign (+) followed by some letters at the end of a pattern means "restrict to these letters". For example, the query *+ban finds "banana".

  • On OneLook's main search or directly on OneLook Thesaurus, you can combine patterns and thesaurus lookups by putting a colon (:) after a pattern and then typing a description of the word, as in ??lon:synthetic fabric and the other examples above.

Other ways to access this service:

Is this available in any language other than English?

The same interface is now available in Spanish at OneLook Tesauro as a beta version. More languages are coming!

How does it work?

We use a souped-up version of our own Datamuse API, which in turn uses several lingustic resources described in the "Data sources" section on that page. The definitions come from Wiktionary, Wikipedia, and WordNet. Here are some known problems with the current system.
Much gratitude to Gultchin et al for the algorithm behind the "Most funny-sounding" sort order.

Profanity and problematic word associations

If you're using this site with children, be forewarned you'll find profanity and other vulgar expressions if you use OneLook frequently. (We take an unflinching look at how words have actually been used; scrubbing out hurtful wordswould be a disservice to everyone.)

Some of the thesaurus results come from a statistical analysis of the words in a large collection of books written in the past two centuries. A handful of times we've found that this analysis can lead us to suggest word associations that reflect racist or harmful stereotypes present in this source material. If you see one of these, please know that we do not endorse what the word association implies. In egregious cases we will remove it from the site if you report it to us via the feedback link below.


No personally identifying information is ever collected on this site or by any add-ons or apps associated with OneLook. OneLook Thesaurus sends your search query securely to the Datamuse API, which keeps a log file of the queries made to the service in the last 24 hours. The log file is deleted after 24 hours and we do not retain any long-term information about your IP address or invididual queries.

Who's behind this site and where can I send my comments and complaints feedback?

OneLook is a service of Datamuse. You can send us feedback here.

The sunburst logo (🔆) is the emoji symbol for "high brightness", which we aspire to create with OneLook. (The graphic came from the open-source Twemoji project.)

Watch a video overview of OneLook Thesaurus