An angry speech full of ultimately insignificant wind (9)

I believe the answer is:

antitrade

'wind' is the definition.
(antitrade is a kind of wind)

'an angry speech full of ultimately insignificant' is the wordplay.
'angry speech' becomes 'tirade' (I've seen this before).
'full of' is an insertion indicator.
'ultimately' suggests the final letters.
The final letter of 'insignificant' is 't'.
'tirade' placed around 't' is 'titrade'.
'an'+'titrade'='ANTITRADE'

(Another definition for antitrade that I've seen is " A blow".)

I've seen this clue in The Guardian.

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