Soniferous is an adjective that means producing or capable of producing sound. There are many synonyms for this word, including sonorous, resonant, noisy, clattering, clanging, and cacophonous. Sonorous connotes a deep, melodious sound, while resonant suggests a rich, echoing quality. Noisy describes a loud and discordant sound, while clattering and clanging both indicate a harsh, metallic noise. Cacophonous implies a discordant mix of sounds that are unpleasant to the ear. Each of these synonyms can be useful in different contexts, depending on the type of sound being described or the tone of the writing.