Raider concealed assistant (4)

I believe the answer is:

aide

'assistant' is the definition.
(aide is a kind of assistant)

'raider concealed' is the wordplay.
'concealed' indicates a hidden word.
'AIDE' is hidden in the letters of 'raider'.

(Other definitions for aide that I've seen before include "Political assistant" , "Somebody helping" , "auxiliary" , "Leader's assistant" , "Officer's assistant" .)

I've seen this clue in The Mirror.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.