snap·py / ˈsnapē/ • adj. (snap·pi·er, snap·pi·est) inf. 1. irritable and inclined to speak sharply; snappish: anything unusual made her snappy and nervous.2. cleverly concise; neat: snappy catchphrases. ∎ neat and elegant: a snappy dresser.PHRASES: make it snappy be quick about it: into bed and make it snappy!DERIVATIVES: snap·pi·ly / -pəlē/ adv.snap·pi·ness n.