2 to speak so as to be heard at a distance a hotheaded man who was always thundering about the crooks and idiots running the government Synonyms of thunder bawl, bay, bellow, cry, holler, hollo (or halloo also hallo), roar, shout, sound off, call, vociferate, yell Words Related to thunder crow, whoop; scream, screech, shriek, shrill, squeak, squeal; caterwaul, howl, ululate, wail, yawp (or yaup), yowl; hail; speak out, speak up Near Antonyms of thunder breathe, mumble, murmur, mutter, whisper