recreant

nouns

an abject coward
craven, poltroon, recreant
a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
apostate, deserter, ratter, recreant, renegade, turncoat

adjectives

having deserted a cause or principle
"some provinces had proved recreant"; "renegade supporters of the usurper"
recreant, renegade
lacking even the rudiments of courage; abjectly fearful
"the craven fellow turned and ran"; "a craven proposal to raise the white flag"; "this recreant knight"- Spenser
craven, recreant