Cross quietly taken from crib (5)
I believe the answer is:
irate
'cross' is the definition.
(both can mean angry)
'quietly taken from crib' is the wordplay.
I cannot really understand how this works, but
'taken' could be 'ate' (eating is a kind of taking) and 'ate' is found within the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for irate that I've seen before include "Hacked off" , "Extremely cross" , "Not happy" , "become irritated" , "Annoyed, nettled" .)