Definition of hoot :
1. A derisive cry or shout.
2. The cry of an owl.
3. To assail with contemptuous cries or shouts; to follow with derisive shouts.
4. To cry out or shout in contempt.
5. To make the peculiar cry of an owl.
shuttle, jack, dickhead, snigger, joke, bastard, diddley, hiss, raspberry bush, sibilation, catcall, ounce, squat, skirt, whoo, iota, whoreson, bull, raspberry, red cent, snicker, doll, Bronx cheer, mend, laugh, poop, damn, shite, fowl, prick, shucks, gas, big, riot, fizzle, hushing, panic, birdie, asshole, dogshit, diddly-squat, shred, tinker's dam, razzing, diddlysquat, diddly-shit, bird, dump, jot, shuttlecock, shit, chick, wench, hissing, boo, diddly, doodly-squat, patch, turd, dame, absurdity, whit, horseshit, bullshit, cocksucker, tinker's damn, scream, laughter, son of a bitch, darn, crap, rap, diddlyshit, razz, dirt
ululate (part of speech: verb)
crow, chatter, cackle, snort, caw, growl, bleat, gobble, moo, purr, mew, squawk, cry, whinny, cuckoo, grunt, bellow, bay, chirp, roar, snarl, cluck, neigh, warble, honk, yelp, squeal, trill, twit, call, howl, ululate, quack, meow, bawl, bray, coo, bark
ululation (part of speech: noun)