Ingenuous, worried examinee (9)
I believe the answer is:
candidate
'examinee' is the definition.
(I've seen this before)
'ingenuous worried' is the wordplay.
'ingenuous' becomes 'candid' (similar in meaning).
'worried' becomes 'ate' (something worrying may eat someone up).
'candid'+'ate'='CANDIDATE'
(Other definitions for candidate that I've seen before include "one seeking election" , "Campaigner" , "Person who seeks appointment to an office" , "Detain cad seeking appointment" , "prospective employee?" .)