Pretend to be ill (8)
I believe the answer is:
malinger
'pretend to be ill' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for malinger that I've seen before include "Feign sickness to avoid work." , "shirk responsibilities" , "Skive by pretending to be ill" , "Feign illness to avoid work" , "Avoid duty by pretending sickness" .)