Crossword Genius

Tremendous macaroni -- lots to be used (12)

Ross

I believe the answer is:

astronomical

'tremendous' is the definition.
(I've seen this before)

'macaroni lots to be used' is the wordplay.
'to be used' is an anagram indicator.
'macaroni'+'lots'='macaronilots'
'macaronilots' is an anagram of 'ASTRONOMICAL'.

(Other definitions for astronomical that I've seen before include "Tremendous" , "Enormous" , "Massive" , "Of the study of stars" , "Absolutely huge, in a heavenly way" .)

I've seen this clue in The Telegraph.
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