Charlie, like so often, needing us to go easy (6)
I believe the answer is:
casual
'easy' is the definition.
(similar in meaning)
'charlie like so often needing us to go' is the wordplay.
I cannot really see how this works, but
'charlie' could be 'c' (phonetic alphabet: alpha, bravo, charlie etc.) and 'c' is located in the answer.
'like' could be 'as' and 'as' is located in the answer.
This may be the basis of clue (or it may be nonsense).
(Other definitions for casual that I've seen before include "Cursory or nonchalant" , "Relaxed; informal" , "Informal or easygoing" , "Type of clothes for leisure time" , "Informal as dress may be" .)