adj. Urged or stimulated from within; naturally moved or impelled; imbued; animated; alive; quick.n. Natural inward impulse; unconscious, involuntary, or unreasoning prompting to any mode of action, whether bodily, or mental, without a distinct apprehension of the end or object to be accomplished.n. Specif., the natural, unreasoning, impulse by which an animal is guided to the performance of any action, without thought of improvement in the method.n. A natural aptitude or knack; a predilectionv. To impress, as an animating power, or instinct.