Inspect any sale that's crooked (7)
I believe the answer is:
analyse
'inspect' is the definition.
(I know this)
'any sale that's crooked' is the wordplay.
'that's crooked' is an anagram indicator (a crooked or disrupted version of the letters).
'any'+'sale'='anysale'
'anysale' anagrammed gives 'ANALYSE'.
(Other definitions for analyse that I've seen before include "Any seal (anag.)" , "Study in detail" , "Examine and interpret" , "Scrutinise, break down" , "Examine the component parts" .)