Crossword Genius

Grounds for these assumptions? (8)

Ross

I believe the answer is:

premises

I believe this is a double definition.

'grounds' is the first definition.
(thesaurus)

'these assumptions?' is the second definition.
('premise' can be a synonym of 'assumption')

'for' is the link.

(Other definitions for premises that I've seen before include "Property" , "Building, place of business" , "Assumptions" , "Places of business" , "States" .)

I've seen this clue in The Times.
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