Idiom flex your muscles (Definition of flexing from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)

flex 1 of 3 verb ˈfleks flexed; flexing; flexes transitive verb 1 : to bend especially repeatedly

flex on 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.

1. Chiefly British Flexible insulated electric cord. 2. The act or an instance of flexing; a bending. 3. Flexibility: a schedule with a lot of flex.

to bend, move, or stretch an arm or a leg, or contract a muscle, especially in order to prepare for a physical activity to flex your fingers/feet/legs He stood on the side of the pool flexing his muscles.

Jul 19, 2025 · Flexing your muscles isn’t just about looking good; it can also boost your mental and physical health by treating headaches, high blood pressure, digestive problems, and more.

May 1, 2023 · Flexing your muscles can build them, but it’s most effective when smartly inserted into a well-designed training plan. Here’s how to do it.

flexing, n. meanings, etymology, pronunciation and more in the Oxford English Dictionary

3 ENTRIES FOUND: flex (verb) flex (noun) muscle (noun) 1 flex / ˈ flɛks/ verb flexes; flexed; flexing Britannica Dictionary definition of FLEX 1 [+ object]

First, straighten your legs, then flex your feet. He tried to impress me by flexing his huge muscles.