unfavorable
[adjective]
Synonyms: adverse, detrimental, negative, evil, bad, ill

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Antonyms: favorable

[TahlilGaran] English Synonym Dictionary ▲

un‧fa‧vour‧a‧ble British English, unfavorable American English /ʌnˈfeɪvərəbəl/ adjective

1. unfavourable conditions, situations etc are not good:
unfavourable circumstances

2. if someone’s reaction or attitude to something is unfavourable, they do not like it:
unfavourable reviews
unfavourable publicity
Careless spelling mistakes in a letter can create an unfavourable impression.
—unfavourably adverb

[TahlilGaran] Dictionary of Contemporary English ▲