UNFAVOURABLE

disadvantageous, unfavorable, unfavourable

(adjective) involving or creating circumstances detrimental to success or effectiveness; “a disadvantageous outcome”; “a well-known study from the 1970’s showed that gender stereotyping placed women in a disadvantageous position”; “made an unfavorable impression”

unfavorable, unfavourable

(adjective) (of winds or weather) tending to hinder or oppose; “unfavorable winds”

unfavorable, unfavourable

(adjective) not encouraging or approving or pleasing; “unfavorable conditions”; “an unfavorable comparison”; “unfavorable comments”; “unfavorable impression”

Source: WordNet® 3.1

Etymology

Adjective

unfavourable (comparative more unfavourable, superlative most unfavourable) (British spelling)

Serving to hinder or oppose; adverse, disadvantageous, inconducive, unsuitable.

Antonym: favourable

Not auspicious; ill-boding.

Synonyms: inauspicious, unfortunate, Thesaurus:unlucky

Antonyms: favourable, fortunate, Thesaurus:lucky

Of a belief, state of mind, etc.: not favourable; disapproving.

Synonym: favourable

Of wind or weather: causing delay or obstacles; not conducive to travel or work; inclement.

Usage notes

Nouns to which unfavourable is often applied: condition, circumstance, weather, climate, outcome, result, opinion, view, impression, effect, consequence, impact, influence, environment, balance, information, report, prognosis, rating, evaluation, review, position, factor, feature, aspect, reaction, response, attitude, season, development, treatment, ruling, case, state, experience, inference.

Source: Wiktionary