Feeble
Part of speech: verb
Definition: To make feeble; to enfeeble.
Part of speech: adjective
Definition: Deficient in physical strength; weak; infirm; debilitated. Wanting force, vigor, or efficiency in action or expression; faint.
Example sentence: My religion consists of a humble admiration of the illimitable superior spirit who reveals himself in the slight details we are able to perceive with our frail and feeble mind.
Nerveless
Part of speech: adjective
Definition: Lacking nerve; fearful; cowardly.Lacking a nervous system.