Boo

buu

(exclamation used by a member of an audience)

huu

(loud exclamation intended to scare someone)

huu

(word used ironically in a situation where one might have scared someone, but said someone was not scared)

pöö

(loud exclamation intended to scare someone)

pöö

(word used ironically in a situation where one might have scared someone, but said someone was not scared)

buuaus

(derisive shout)

buuata

(to shout boos derisively (intransitive))

buuata

(to shout boos at (transitive))