recreant

1. an abject coward

2. a disloyal person who betrays or deserts his cause or religion or political party or friend etc.

1. having deserted a cause or principle;

"some provinces had proved recreant"

"renegade supporters of the usurper"

2. 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