Crossword Genius

US soldier acting strangely sees mammoth (8)

Ross

I believe the answer is:

gigantic

'mammoth' is the definition.
(I know that mammoth can be written as gigantic)

'us soldier acting strangely' is the wordplay.
'us soldier' becomes 'GI' (informal term for a US soldier).
'strangely' is an anagram indicator.
'acting' is an anagram of 'gantic'.
'gi'+'gantic'='GIGANTIC'

'sees' is the link.

(Other definitions for gigantic that I've seen before include "Sizeable" , "Hugh,colossal" , "Extremely large" , "walloping" , "Titanic" .)

I've seen this clue in The Sun.
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