pusillanimus
Pusillanimus is an adjective in English derived from Latin, meaning lacking courage, timid, or faint-hearted. The related noun forms are pusillanimity (the state or quality of being pusillanimous) and, less commonly, pusillanimousness. The term conveys moral judgment as much as simple fear, suggesting a small or petty spirit rather than only momentary fright.
Etymology and classical usage trace the word to Latin pusillus, meaning "small," and animus, meaning "mind" or
Usage and nuance: pusillanimus implies more than momentary fear; it denotes a deficiency of courage, generosity
Related terms include magnanimity (the quality of being generous and noble in spirit), courage, and cowardice.