Coward: noun a person who lacks the courage to do or endure dangerous or unpleasant things.
milk-toast
Click (I like the way she says it) [milk-tohst]
–adjective
easily dominated; extremely mild; ineffectual; namby-pamby; wishy-washy.
Prime example
Have you ever heard this guy, man up, look someone in the eye, an answer a question in a forthright direct way?
Of course not. But he does work for the most transparent administration of all time. Holder is transparent all right, you can see right through him for the wimp that he is.