[ fleks ]
/ flɛks /
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verb (used with object)
to bend, as a part of the body: He flexed his arms to show off his muscles.
to tighten (a muscle) by contraction.
to demonstrate (one’s ability, expertise, etc.): She’s flexed her marketing skills for various clients in the publishing industry.
Slang. to boast or brag about; flaunt: He’s just not into flexing his success.
verb (used without object)
Slang. to boast or brag; show off: In his rap lyrics he flexes about his fancy lifestyle.
the act of flexing.
Slang. a boast or brag: It's not a flex, but we have the best burgers here.
- any flexible, insulated electric cord; an electric cord or extension cord.
- Slang. an elastic band, as a garter.
Mathematics. an inflection point.
flex on, Slang. to brag or show off to; assert one’s dominance or superiority over: She’s flexing on her haters by posting new photos of her beautiful family.
THINGAMABOB OR THINGUMMY: CAN YOU DISTINGUISH BETWEEN THE US AND UK TERMS IN THIS QUIZ?
Do you know the difference between everyday US and UK terminology? Test yourself with this quiz on words that differ across the Atlantic.
Question 1 of 7
In the UK, COTTON CANDY is more commonly known as…
Origin of flex1
First recorded in 1515–25; (adjective) from Latin flexus, past participle of flectere “to bend, turn”; (noun) from Latin flexus act of bending, equivalent to flect(ere) + -tus suffix of verbal action
Other definitions for flex (2 of 3)
[ fleks ]
/ flɛks /
Informal. flexible: a flex program of workers' benefits.
Origin of flex2
Shortening of flexible
Other definitions for flex (3 of 3)
a combining form representing flexible in compound words: flextime.
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use flex in a sentence
Grandamicus, Nova Demonstratio immobilitatis terr petita ex virtute magnetica (Flexi, 1645).On the magnet, magnetick bodies also, and on the great magnet the earth|William Gilbert of Colchester
British Dictionary definitions for flex
/ (flɛks) /
British a flexible insulated electric cable, used esp to connect appliances to mainsUS and Canadian name: cord
informal flexibility or pliability
to bend or be benthe flexed his arm; his arm flexed
to contract (a muscle) or (of a muscle) to contract
(intr) to work according to flexitime
to test or display (one's authority or strength)
Word Origin for flex
C16: from Latin flexus bent, winding, from flectere to bend, bow
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012