Synonyms of the word

adverse

• adj. Unfavorable; antagonistic in purpose or effect; hostile; actively opposing one's interests or wishes;…
• adj. Opposed; contrary; opposing one's interests or desire.
• adj. (not comparable) Opposite; confronting.

contrary

• adj. Opposite; in an opposite direction; in opposition; adverse.
• adj. Opposed; contradictory; inconsistent.
• adj. Given to opposition; perverse; wayward.
• adv. Contrarily.
• n. The opposite.
• n. One of a pair of propositions that cannot both be simultaneously true.
• v. (obsolete) To oppose; to frustrate.
• v. (obsolete) To impugn.
• v. (obsolete) To contradict (someone or something).
• v. (obsolete) To do the opposite of (someone or something).
• v. (obsolete) To act inconsistently or perversely; to act in opposition to.
• v. (obsolete) To argue; to debate; to uphold an opposite opinion.
• v. (obsolete) To be self-contradictory; to become reversed.

harmful

• adj. of a kind likely to be damaging; injurious.

inauspicious

• adj. Not auspicious; ill-omened; unfortunate; unlucky; unfavorable.

unfavorable

• adj. Disadvantageous, adverse, unsuitable, inconducive; serving to hinder or oppose.
• adj. (of a belief, state of mind, etc) Not favorable, disapproving.
• adj. (of wind or weather) Causing obstacles or delay; not conducive to travel or work; inclement.
• adj. Not auspicious; ill-boding.

unfavourable

• adj. not approved of.
• adj. (of wind or weather) opposing or hindering.

untoward

• adj. Unfavourable, adverse, or disadvantageous.
• adj. Unruly, troublesome.
• adj. Unseemly, improper.