Quickly take off clothes rolling about (5)
I believe the answer is:
apace
'quickly' is the definition.
(synonyms)
'take off clothes rolling about' is the wordplay.
'take off' becomes 'ape' (both can mean to imitate).
'clothes' is an insertion indicator (inserted letters are clothed in others).
'rolling about' becomes 'ac' (I am not sure about this - if you are sure you should give a lot more credence to this answer).
'ape' enclosing 'ac' is 'APACE'.
Can you help me to learn more?
(Other definitions for apace that I've seen before include "fast" , "Swiftly, quickly" , "at high speed" , "flat out" , "(Move on) swiftly" .)