Harsh

hard bitter sharp coarse noisy crude severe bleak cacophonous dissonant discordant jarring grating rasping raucous strident hoarse sour flat uneven rugged jagged rigid disturbing incompatible unmusical tuneless off-key out-of-tune out-of-key screeching earsplitting not smooth jangling creaking rusty grim clashing unlevel acrid guttural craggy astringent unmelodious caterwauling disagreeing stridulous asperous croaking glaring unrelenting