Husher, as a noun, refers to something that quiets or mutes sounds. In that sense, some antonyms for husher would be amplifier, loudspeaker, and megaphone, which enhance and amplify sounds. However, the verb form of husher means to quiet or suppress sounds, so antonyms in this sense could be blare, clamor, or vociferate, which imply loud and unrestrained sounds. Another antonym for husher might be disturbance, which suggests any kind of interruption or disruption of peace and quiet. In summary, the antonyms for husher would depend on the context and the specific meaning one is referring to.