Equal to it (4)
I believe the answer is:
able
'equal to it' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for able that I've seen before include "Clever skilful" , "Having the skills and qualifications required" , "Fully competent" , "Competent and equipped" , "Competent as, say, sailor" .)