Crossword Genius

Construction to suddenly crumble for example? (5,10)

Ross

I believe the answer is:

split infinitive

I believe this is a double definition.

'construction' is the first definition.
(grammatical construction)

'to suddenly crumble for example?' is the second definition.
('to suddenly crumble' is a split infinitive)

(Other definitions for split infinitive that I've seen before include "To boldly go" , "Grammatical error to many" , "structure some object to" .)

I've seen this clue in The Telegraph.
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