ill-timedEnglishOxford American Thesaurusill-timed adjective their ill-timed foray into overseas property markets: untimely, mistimed, badly timed; premature, early, hasty; inopportune, inconvenient, awkward, unwelcome; inappropriate, unsuitable, inapt; disadvantageous, unfavorable, unfortunate, inept. ▷antonyms opportune; timely.