Hurtful \Hurt"ful\, a. Tending to impair or damage; injurious; mischievous; occasioning loss or injury; as, hurtful words or conduct. Syn: Pernicious; harmful; baneful; prejudicial; detrimental; disadvantageous; mischievous; injurious; noxious; unwholesome; destructive. -- {Hurt"ful*ly}, adv. -- {Hurt"ful*ness}, n.