Crossword Genius

Secure giant, say (7)

Ross

I believe the answer is:

tighten

'secure' is the definition.
(thesaurus)

'giant say' is the wordplay.
'giant' becomes 'titan' (titans are giant mythological creatures).
'say' indicates a 'sounds like' (homophone) clue.
'titan' is a homophone of 'TIGHTEN'.

(Other definitions for tighten that I've seen before include "increase tension" , "Make more restrictive" , "Turn, a screw say" , "Fasten more firmly" , "Constrict" .)

I've seen this clue in The Mirror and The Daily Express.
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