Some extroverts wander around (4)
I believe the answer is:
rove
'wander around' is the definition.
(I've seen this in another clue)
'some extroverts' is the wordplay.
'some' indicates a hidden word (some of the parts of the word are used).
'ROVE' can be found hidden inside 'extroverts'.
(Other definitions for rove that I've seen before include "Wander or walk about" , "Ramble, roam, wander" , "Roam about aimlessly" , "Wander aimlessly" , "Knock about" .)