Angry I reckon (5)

I believe the answer is:

irate

'angry' is the definition.
(similar in meaning)

'i reckon' is the wordplay.
'reckon' becomes 'rate' (I've seen this in other clues).
'i'+'rate'='IRATE'

(Other definitions for irate that I've seen before include "Indignant, angry" , "Full of 22" , "Cross, irritated" , "I tear away, being annoyed" , "become irritated" .)

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

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