sound off Antonyms

listen to a speech be phlegmatic about be passionless be nonchalant about be mindless of be impassive be hushed be heedless of be dispassionate be detached be casual 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 careless of be attentive be apathetic towards be silent concentrate on keep quiet be quiet unarticulated shut up hearken hear hark attend fall silent get a load of be apathetic about be aloof be speechless be oblivious to be distant keep silent keep silence tune in say nothing keep one's ears open allude