Resistless \Re*sist"less\, a.
1. Having no power to resist; making no opposition. [Obs. or
R.] --Spenser.
[1913 Webster]
2. Incapable of being resisted; irresistible.
[1913 Webster]
Masters' commands come with a power resistless
To such as owe them absolute subjection. --Milton.
[1913 Webster] -- {Re*sist"less*ly}, adv. --
{Re*sist"less*ness}, n.
[1913 Webster]