Crossword Genius

Ratty's boat kept in hideaway capsized (6)

Ross

I believe the answer is:

narked

'ratty's' is the definition.
(both can mean annoyed)

'boat kept in hideaway capsized' is the wordplay.
'boat' becomes 'ark' (ark is a kind of boat).
'kept in' means one lot of letters goes inside another.
'hideaway' becomes 'den' (synonyms).
'capsized' is a reversal indicator.
'den' reversed gives 'ned'.
'ark' inserted within 'ned' is 'NARKED'.

(Other definitions for narked that I've seen before include "Nettled" , "Cross" , "Annoyed (informal)" , "'Vexed, riled (6)'" , "Annoyed - upset - irritated" .)

I've seen this clue in The Telegraph.
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