Prejudicial

Part of speech: adjective (a.)

1. Biased, possessed, or blinded by prejudices; as, to look with a prejudicial eye. [Obs.] Holyday.

2. Tending to obstruct or impair; hurtful; injurious; disadvantageous; detrimental. Hooker. His going away . . . was most prejudicial and most ruinous to the king's affairs. Clarendon. -- Prej`u*di"cial*ly, adv. -- Prej`u*di"cial*ness, n.