Look at rates review (5)
I believe the answer is:
stare
'look' is the definition.
(staring is a kind of looking)
'rates review' is the wordplay.
'review' is an anagram indicator.
'rates' is an anagram of 'STARE'.
'at' acts as a link.
(Other definitions for stare that I've seen before include "Gawp" , "'Look fixedly, without blinking (5)'" , "Long fixed look" , "Rates (anag.)" , "Look with fixed eyes" .)