Most canorous means having the loudest and most harmonious sound or being highly musical. Antonyms, on the other hand, are words that have opposite meanings. Therefore, antonyms for most canorous are words that represent sounds that are quiet and dissonant. Some antonyms for most canorous are noiseless, silent, unmelodious, discordant or harsh. Therefore, if someone says a song is not most canorous, it means that the song is not loud and melodious. Instead, it could be quiet, silent or even disharmonious. Antonyms of most canorous might not be preferred by many people, but they still hold their unique place in literature and language.