A giant, under any circumstances (2,3)

I believe the answer is:

at all

'under any circumstances' is the definition.
(I've seen this in another clue)

'a giant' is the wordplay.
'giant' becomes 'tall'.
'a'+'tall'='AT ALL'

(Other definitions for at all that I've seen before include "Whatsoever" , "in any way" , "in any circumstances" .)

I've seen this clue in The Telegraph.

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