Morpheme
Boo
Type
free base
Denotation
loud and startling sound
Etymology
Middle English boh
Evidence
boo, booable, boobird, booed, booer, booing, boos, peekaboo
Boo
free base
loud and startling sound
Middle English boh
boo, booable, boobird, booed, booer, booing, boos, peekaboo