craven
[ krey-vuhn ]
lacking even the rudiments of courage
USE 1
The leader’s craven refusal to stand up for the rights of the oppressed disappointed many of his followers.
USE 2
In the face of danger, his craven behavior was evident as he was the first to flee, leaving others to fend for themselves.
USE 3
Despite his boastful talk, when confronted with a challenging situation, his craven nature became apparent to everyone.