rep1 / rep/ inf. • n. a representative: a union rep. ∎ a sales representative.• v. (repped, rep·ping) [intr.] act as a sales representative for a company or product: at eighteen she was working for her dad, repping on the road.rep2 • n. inf. repertory: once, when I was in rep, I learned the part of Iago in three days. ∎ a repertory theater or company.rep3 (also repp) • n. a fabric with a ribbed surface, used in curtains and upholstery.rep4 • n. inf. short for reputation: I don't know why caffeine's suddenly got such a bad rep.rep5 • n. (in bodybuilding) a repetition of a set of exercises; compare with set2 1.