lacking courage or resolution; cowardly; faint-hearted; timid.
2.
proceeding from or indicating a cowardly spirit.
Origin: 1580–90; < Late Latin pusillanimis petty-spirited, equivalent to Latin pusill(us) very small, petty + -anim(is) -spirited, -minded (anim(us) spirit + -is adj. suffix); see -ous
late 14c. (implied in pusillanimity), from L.L. pusillanimis "having little courage" (used in Church L. to translate Gk. oligopsychos "small-souled"), from L. pusillis "very weak, little" (dim. of pullus "young animal") + animus "spirit, courage."