craven - coward
Somebody or something described as ‘craven’ is thought to be contemptibly lacking in courage, conviction, or moral fiber. It is more formal than the similar meaning ‘cowardly’, and tends to be expressed with more disdain.
The new policies are weak and craven. They do not go far enough in addressing the problem.
Her leadership is badly undermined by the craven sycophants she has around her.
The sheer cravenness of the terror attack made it particularly galling.