obesity
Americannoun
Other Word Forms
Derived Forms
Inflected Forms
Nouns
Etymology
Origin of obesity
First recorded in 1605–15; from Middle French obésité, from Latin obēsitāt-, stem of obēsitās, equivalent to obēs(us) obese ( def. ) + -i- ( def. ) + -tās -ty 2 ( def. )
Compare meaning
How does obesity compare to similar and commonly confused words? Explore the most common comparisons:
Explanation
Obesity is the condition of being more overweight than is considered average or healthy. The noun obesity was first used around 1610 and has origins in the Latin word obesitas, meaning "fatness" or "corpulence." During the Middle Ages, obesity was a sign of wealth and prosperity indicating that you had enough money to buy and eat all the food you wanted while others starved. Nowadays, research has shown that having too much fat can cause a number of related health problems. A healthy diet and fitness regime is a great way for someone to shed excess pounds and avoid obesity.
Vocabulary lists containing obesity
"A Rose for Emily"
Looking to grow your vocabulary? Check out this interactive, curated word list from our team of English language specialists at Vocabulary.com – one of over 17,000 lists we've built to help learners worldwide!
List 2
Interested in learning more words like this one? Our team at Vocabulary.com has got you covered! You can review flashcards, quiz yourself, practice spelling, and more – and it's all completely free to use!
Nutrition - Introductory
Want to remember this word for good? Start your learning journey today with our library of interactive, themed word lists built by the experts at Vocabulary.com – we'll help you make the most of your study time!
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
Lilly is listed as a collaborator on a study at Johns Hopkins University testing whether tirzepatide, the main ingredient in Mounjaro, can reduce binge-eating episodes in adults with obesity and binge-eating disorder.
From The Wall Street Journal • Jul. 8, 2026
But admits she is apprehensive about relying on them for solving the obesity issue.
From BBC • Jul. 6, 2026
Because growth hormone also helps regulate glucose and fat metabolism, consistently poor sleep may increase the risk of obesity, diabetes, and cardiovascular disease.
From Science Daily • Jul. 5, 2026
She worries about rising rates of childhood obesity and diabetes.
From The Wall Street Journal • Jul. 5, 2026
I’m excited to talk about all of these except the one about obesity.
From "Watch Us Rise" by Renée Watson and Ellen Hagan
![]()
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.