harmful - causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

toxic - of or relating to or caused by a toxin or poison; "suffering from exposure to toxic substances"

unwholesome - detrimental to physical or moral well-being; "unwholesome food"; "unwholesome habits like smoking"

dangerous, unsafe - involving or causing danger or risk; liable to hurt or harm; "a dangerous criminal"; "a dangerous bridge"; "unemployment reached dangerous proportions"

disadvantageous, harmful - constituting a disadvantage

malign - evil or harmful in nature or influence; "prompted by malign motives"; "believed in witches and malign spirits"; "gave him a malign look"; "a malign lesion"

destructive - causing destruction or much damage; "a policy that is destructive to the economy"; "destructive criticism"

harmful, noxious - injurious to physical or mental health; "noxious chemical wastes"; "noxious ideas"

offensive - causing anger or annoyance; "offensive remarks"

painful - causing physical or psychological pain; "worked with painful slowness"

toxic - of or relating to or caused by a toxin or poison; "suffering from exposure to toxic substances"

unwholesome - detrimental to physical or moral well-being; "unwholesome food"; "unwholesome habits like smoking"

inexpedient - not suitable or advisable; "an inexpedient tactic"

harmful - causing or capable of causing harm; "too much sun is harmful to the skin"; "harmful effects of smoking"

inopportune - not opportune; "arrived at a most inopportune hour"; "an inopportune visit"

unfavorable, unfavourable - not encouraging or approving or pleasing; "unfavorable conditions"; "an unfavorable comparison"; "unfavorable comments"

malign - evil or harmful in nature or influence; "prompted by malign motives"; "believed in witches and malign spirits"; "gave him a malign look"; "a malign lesion"