| Hoo 1. (interj.) See Ho. 2. (interj.) Hurrah! -- an exclamation of triumphant joy. Thesaurus Entries call, carol, caw, chatter, cheep, chirk, chirp, chirr, chirrup, chitter, chuck, clack, cluck, coo, croak, cronk, crow, cuckoo, drum, gabble, gaggle, gobble, guggle, honk, hoo, hoot, peep, pip, pipe, quack, roll, scold, sing, squawk, trill, tweet, twit, twitter, warble, whistle |