He upsets the warden (6)

I believe the answer is:

andrew

'he' is the definition.
(I've seen this before)

'upsets the warden' is the wordplay.
'upsets' indicates anagramming the letters.
'warden' is an anagram of 'ANDREW'.

(Other definitions for andrew that I've seen before include "Boy's name" , "apostle" , "- Marvell, seventeenth century poet" , "Royal prince" , "Patron saint of Scotland, Russia" .)

I've seen this clue in The Globe and Mail.

Want a hint initially instead of a full solution? Install my app