Resistless

Part of speech: adjective (a.)

1. Having no power to resist; making no opposition. [Obs. or R.] Spenser.

2. Incapable of being resisted; irresistible. Masters' commands come with a power resistless To such as owe them absolute subjection. Milton. -- Re*sist"less*ly, adv. -- Re*sist"less*ness, n.