non-committal Antonyms

avid receptive short-spoken single-hearted subitaneous thirsty unbeguiling undiscerning unweary vaulting vocal well-set willing knee jerk plainspoken straight-from-the-shoulder unsubtle wholehearted pumped precipitant plain-spoken brusk committed dedicated dynamic eager earnest fanatical foursquare franc frankish free-spoken free-tongued full-hearted hungry inadvertent outspoken oversure unpretending