unfavourable

adjective

1 his poor turnout received unfavourable comment:

adverse, critical, hostile, inimical, unfriendly, antagonistic, unsympathetic, negative;

opposing, ill-disposed, contrary, discouraging, disapproving, uncomplimentary, unflattering, damaging, injurious, poor, low, bad, antipathetic.

▷antonyms favourable, positive.

2 the unfavourable economic climate:

disadvantageous, adverse, inauspicious, unpropitious, unfortunate, unlucky, unhappy, detrimental, bad, gloomy;

unsuitable, inappropriate, inconvenient, inopportune, inapt.

▷antonyms favourable, advantageous.

unfavourable Oxford Dictionary of English