harmful

As adjectives the difference between counterproductive and harmful

is that counterproductive is more of a hindrance than a help while harmful is of a kind likely to be damaging; injurious.

Harmful is a related term of despicable.

As adjectives the difference between harmful and despicable

is that harmful is of a kind likely to be damaging; injurious while despicable is fit or deserving to be despised; contemptible; mean; vile; worthless.

Cataclysmic is a related term of harmful.

As adjectives the difference between cataclysmic and harmful

is that cataclysmic is of or pertaining to a cataclysm; causing great destruction or upheaval; catastrophic while harmful is of a kind likely to be damaging; injurious.

Rotten is a related term of harmful.

As a noun rotten

is .

As an adjective harmful is

of a kind likely to be damaging; injurious.

Corrupt is a related term of harmful.

As adjectives the difference between corrupt and harmful

is that corrupt is in a depraved state; debased; perverted; morally degenerate; weak in morals while harmful is of a kind likely to be damaging; injurious.

As a verb corrupt

is to make ; to change from good to bad; to draw away from the right path; to deprave; to pervert.

Harmful is a related term of noisome.

As adjectives the difference between harmful and noisome

is that harmful is of a kind likely to be damaging; injurious while noisome is morally hurtful or noxious.

Depraved is a related term of harmful.

As adjectives the difference between depraved and harmful

is that depraved is perverted or extremely wrong in a moral sense while harmful is of a kind likely to be damaging; injurious.

As a verb depraved

is (deprave).

As an adverb utterly

is completely, entirely, to the fullest extent.

As an adjective harmful is

of a kind likely to be damaging; injurious.

As adjectives the difference between untoward and harmful

is that untoward is unfavourable, adverse, or disadvantageous while harmful is of a kind likely to be damaging; injurious.

Hostile is a related term of harmful.

As adjectives the difference between hostile and harmful

is that hostile is belonging or appropriate to an enemy; showing the disposition of an enemy; showing ill will and malevolence, or a desire to thwart and injure; occupied by an enemy or enemies; inimical; unfriendly while harmful is of a kind likely to be damaging; injurious.

As a noun hostile

is (chiefly|in the plural) an enemy.