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

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

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.

In modern slang, flexing has expanded to include showing off wealth, achievements, or anything someone is proud of. It has become a common term in social media and pop culture to …

Aug 27, 2019 · Flexing your muscles can build strength by keeping them still while they face resistance. Learn more about the pros and cons of muscle flexing, and examples of exercises …

When you flex something, you bend or contract it. To appear super tough, you might flex your archery bow while flexing your muscles.