truthy
UK/ˈtɹuːθi/
truthy adjective: faithful; true.
Adjective
truthy (comparative truthier, superlative truthiest)
- Faithful; true.
- You […] are afraid Theodore your sweetheart shouldn't prove truthy.c. 1800, J. H. Colls, Theodore
- Mindy Lahiri is never one to mince words, and most of the things that come out of her mouth are rife for a gospel. But her sheer overwhelming emotion at her doughnut craving is one of the truthiest truthisms she's ever truthed. Preach, girl.2016 June 3, Seija Rankin, “It's National Doughnut Day, so Let's Relive the Best Doughnut Moments in Pop Culture”, in E! Online
- Only superficially true; that is asserted or felt instinctively to be true, with no recourse to facts.
- Historians today point out that each of these ringing assertions was, at best, truthy.2011, Steven Pinker, The Better Angels of Our Nature, Penguin, published 2012, page 595
- Evaluating to true in a Boolean context.
- In JavaScript, any expression or statement that expects a boolean value will work with a truthy or falsy value, so the fact that && does not always evaluate to true or false does not cause practical problems.2012, David Flanagan, JavaScript Pocket Reference, page 40
- In JavaScript, as well as the true or false Boolean values, other types of variables can be said to be truthy or falsey.2013, Dan Wellman, jQuery Hotshot, →ISBN
- Antonyms:
- falsy
Examples of truthy in a sentence
- To remember which values are truthy and which are falsey, just memorize the five falsey values - undefined, null, 0, "" and NaN -- and remember that everything else is truthy.2014, Eric T. Freeman, Elisabeth Robson, Head First JavaScript Programming: A Brain-Friendly Guide, →ISBN, page 292:
- Clojure uses the Boolean operators or and and. or returns either the first truthy value or the last value, and returns the first falsey value or, if no values are falsey, the last truthy value.2015, Daniel Higginbotham, Clojure for the Brave and True, →ISBN, page 40:
Synonyms of truthy
Antonyms
Forms of truthy
| comparative | truthier |
|---|---|
| superlative | truthiest |
Origin of truthy
From truth + -y. In colloquial sense, back-formation from truthiness.
Words formed from truthy
Words that rhyme with truthy
Questions about truthy
- What does truthy mean?
- Truthy means faithful; true.
- How do you use truthy in a sentence?
- To remember which values are truthy and which are falsey, just memorize the five falsey values - undefined, null, 0, "" and NaN -- and remember that everything else is truthy.
- What part of speech is truthy?
- Truthy is an adjective.
- How do you pronounce truthy?
- Truthy is pronounced /ˈtɹuːθi/ (UK).
Words near truthy in the dictionary
Source and license
Adapted from Wiktionary: truthy (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.
Last updated:
Pronunciation audio from Wikimedia Commons, each file under its own free license: En-us-truthy.oga.
Cite this entry: “truthy.” Word.ws, https://word.ws/truthy. Based on Wiktionary, CC BY-SA 4.0.