Crossword Genius

Anger? Irrational figure quite losing it (5)

Ross

I believe the answer is:

pique

'anger?' is the definition.
(pique is a kind of anger)

'irrational figure quite losing it' is the wordplay.
'irrational figure' becomes 'pi' (pi is an irrational number).
'losing' is a deletion indicator.
'quite' with 'it' taken out is 'que'.
'pi'+'que'='PIQUE'

(Other definitions for pique that I've seen before include "Stimulate (one's curiosity)" , "Resentment at a slight" , "Angry resentment" , "Resentful feeling" , "Offence taken" .)

I've seen this clue in The Independent.
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