[ 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.
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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. 2022
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
Medical definitions for flex
[ flĕks ]
To contract a muscle.
To move a joint so that the parts it connects approach each other.
The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.