uncommittedEnglishOxford American Thesaurusuncommitted adjective 1 uncommitted voters: floating, undecided, nonaligned, nonpartisan, unaffiliated, neutral, impartial, independent, undeclared, uncertain, vacillating; informal sitting on the fence. ▷antonyms committed, aligned. 2 a book about the uncommitted male: unmarried, unattached, unwed, unwedded, wifeless, husbandless, partnerless, unengaged, unbetrothed, unpledged, unpromised, free, footloose and fancy free, available, single, lone, not going out with anyone. ▷antonyms committed, attached, married.