unfavorable

Synonyms: adverse antagonistic calamitous contrary damaging destructive disadvantageous discommodious hostile ill ill-advised improper inadvisable inauspicious inconvenient inexpedient infelicitous inimical inopportune late low malapropos negative objectionable ominous opposed poor regrettable tardy threatening troublesome unfit unfortunate unfriendly unlucky unpromising unpropitious unseasonable unseemly unsuited untimely untoward wrong

Antonyms: favorable friendly good nice