Third-person singular simple present indicative form of flex

plural of flex

(uncountable) Flexibility, pliancy. / (countable) An act of flexing. / (uncountable, chiefly Britain) Any flexible insulated electrical wiring.

(transitive, chiefly physics or biomechanics) To bend something. / (transitive) To repeatedly bend one of one's joints. / (transitive) To move part of the body using one's muscles.

present participle of flex

The action of the verb flex; a bending of something, a tightening of the muscles.

plural of flexing

simple past tense and past participle of flex

(business) The practice of adjusting prices regionally, in line with local competition.

Short for flexible spending account.