sound off Antonyms

listen to a speech be passionless be nonchalant about be mindless of be impassive be hushed be heedless of be dispassionate be detached be casual about be careless of be phlegmatic about be uncaring about be unconcerned about lend an ear to hang on someone's words concentrate on hearing be unresponsive to be uninvolved with be uninvolved in be unenthusiastic about cease talking be voiceless maintain silence be attentive be apathetic towards keep quiet be quiet unarticulated devoice shut up rotted hearken hear hark attend concentrate on be silent fall silent be apathetic about be aloof be speechless be oblivious to be distant keep silent keep silence say nothing keep one's ears open get a load of allude