Heads-up — synonyms, definition

1. heads-up (Adjective)

wide-awake

heads-up (Adjective) — Fully alert and watchful. ex. "played heads-up ball"

2. heads-up (Noun)

heads up

heads-up (Noun) — A warning message. ex. "he sent a heads-up to the District Attorney"

heads-up (Noun) — An advisory notice; a call to pay attention to or look at something. ex. "thanks for the heads-up about the new edition"

warning