1. (noun)poltroon, craven, recreant an abject coward
2. (noun)deserter, apostate, renegade, turncoat, recreant, ratter a disloyal person who betrays or deserts his cause or religion or political party or friend etc.
3. (adj)recreant, renegade having deserted a cause or principle "some provinces had proved recreant"; "renegade supporters of the usurper"
4. (adj)craven, recreant 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