Entry 2 senses · 2 variants Webster, 1913 Bugbear /bŭg′-bâr/ · Bug·bear · IPA /ˈbʌɡ.bɛɚ/ n. v. t. 01 n. Same as Bugaboo. 1. Same as Bugaboo. See: Bugaboo 02 v. t. To alarm with idle phantoms. 1. To alarm with idle phantoms.