harsh

bitter bleak grim hard rigid severe sharp strident

coarse

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

bland bright calm cheerful easy facile flexible kind low mild moderate nice pleasant pliable pliant soft sunny yielding

courteous gentle peaceful pleasing polite smooth

bitter brutal cruel grim hard punitive relentless rude ruthless severe sharp stern stringent tough unkind unpleasant

austere comfortless cussed discourteous dour gruff hairy hard-boiled hard-nosed hard-shell mean pitiless uncivil unfeeling ungracious unrelenting wicked

agreeable bland calm cheerful compassionate considerate easy facile flexible friendly gentle giving good inexact kind merciful mild nice pleasant sympathetic tolerant wonderful

courteous peaceful pleasing polite smooth soft