Extremely nervous? (4)

I believe the answer is:

edgy

This clue is a double definition.

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

'nervous?' is the second definition.
('edgy' can be a synonym of 'nervous')

(Other definitions for edgy that I've seen before include "ready to flap?" , "Jittery" , "Keyed up" , "Red shade" , "Nervous and tense, irritable" .)

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

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