verb
bellow, cry out, scream, shout, yelp, yap, bark, bawl, roar, halloo, vociferate, whoop, howl, screech, shriek, shrill, squeal, squall, ululate, yammer, hoot, cheer, call, yip, give encouragement, call down, raise one's voice, yawp, holler*, whoop it up*; see also sound 1.