1. (noun)boom, roar, roaring, thunder a deep prolonged loud noise Synonyms: thunder, microphone boom, nose drops, bellowing, bellow, scag, hollo, gravy, godsend, bonanza, holla, yowl, big H, hell dust, hollering, holler, gold rush, windfall, smack, manna from heaven, roar, bunce, roaring, boom, holloa, skag
2. (noun)bellow, bellowing, holla, holler, hollering, hollo, holloa, roar, roaring, yowl a very loud utterance (like the sound of an animal) Synonyms: bellowing, roaring, bellow, holloa, holler, yowl, hollering, holla, thunder, hollo, boom, hollow, roar
3. (verb)roar the sound made by a lion Synonyms: thunder, bellow, holloa, yowl, holler, boom, bellowing, holla, hollo, hollering, roaring
4. (verb)roar, howl make a loud noise, as of wind, water, or vehicles Synonyms: howl, thunder, yawl, yaup, wrawl, yowl, bellow, wail, ululate, yammer, roar
5. (verb)thunder, roar utter words loudly and forcefully Synonyms: howl, thunder, yawl, yaup, boom, bellow, wail, ululate, roar
1. ROAR To call is to send out the voice in order to attract another's attention, either by word or by inarticulate utterance. Animals call their mates, or their young; a man calls his dog, his horse, Synonyms: call, bawl, cry (out), roar, shriek, bellow, ejaculate, scream, vociferate, clamor, exclaim, shout, yell Antonyms: be silent, be still, hark, hearken, hush, list, listen
Synonyms for ROAR 
