chickenhearted(s = adj.all) chicken, lily-livered, white-livered, yellow, yellow-bellied - easily frightened;

   Timid; fearful; cowardly; easily frightened. Bunyan. [1913 Webster]

N  cowardice, pusillanimity, cowardliness, timidity, effeminacy, poltroonery, baseness, dastardness, dastardy, abject fear, funk, Dutch courage, fear, white feather, faint heart, cold feet, yellow streak, coward, poltroon, dastard, sneak, recreant, shy cock, dunghill cock, coistril, milksop, white liver, lily liver, nidget, one that cannot say 'boo' to a goose, slink, Bob Acres, Jerry Sneak, alarmist, terrorist, pessimist, runagate, coward, cowardly, fearful, shy, timid, timorous, skittish, poor- spirited, spiritless, soft, effeminate, weak-minded, infirm of purpose, weak-hearted, fainthearted, chickenhearted, henhearted, lilyhearted, pigeon-hearted, white- livered, lily-livered, milk-livered, milksop, smock-faced, unable to say 'boo' to a goose, dastard, dastardly, base, craven, sneaking, dunghill, recreant, unwarlike, unsoldier-like, in face a lion but in heart a deer, unmanned, frightened, Int, sauve qui peut!, every man for himself!, devil take the hindmost!, ante tubam trepidat, one's courage oozing out, degeneres animos timor arguit.