E.g. Ali could be quick-moving (5)
I believe the answer is:
agile
'quick-moving' is the definition.
(I've seen this before)
'e g ali could be' is the wordplay.
'could be' is an anagram indicator.
'e'+'g'+'ali'='egali'
'egali' is an anagram of 'AGILE'.
(Other definitions for agile that I've seen before include "Able to move quickly and easily" , "Quick to move" , "Moving quickly/easily" , "Nimble, lively" , "Mentally acute" .)