unhelpful or hurtful

unfavorable, antagonistic

causing destruction; fond of, in the habit of, destroying

injurious, devastating

causing discomfort, trouble or annoyance

bothersome, troublesome

not expedient

futile

causing, likely to cause, injury

hurtful

feeling, showing, caused by, malice

hateful

filled with, engaged in, mischief

devilish, wicked

expressing 'no', 'not', a refusal; lacking commitment, enthusiasm; (of number or amount) less than zero

bad, contradictory

harmful

deadly, injurious

extremely harmful, causing distress

bad, hurtful

having poison; causing death or injury

harmful

causing, caused by infection (with disease germs)

harmful