Irritable in overcrowded gym (4)

I believe the answer is:

edgy

'irritable' is the definition.
(edgy or on edge can mean irritable)

'in overcrowded gym' is the wordplay.
'in' says the answer is hidden in the clue.
'EDGY' can be found hidden inside 'overcrowded gym'.

(Other definitions for edgy that I've seen before include "Overstrung" , "Nervous; jumpy" , "Apprehensive" , "In a tense state" , "ready to flap?" .)

I've seen this clue in The Independent.

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