Crossword Genius

Puts a sty fixed so that it won’t move (5,3)

Ross

I believe the answer is:

stays put

I'm a little stuck... Click here to teach me more about this clue!

'that it won't move' is the definition.
I can't judge whether this defines the answer.

'puts a sty fixed' is the wordplay.
'fixed' indicates an anagram.
'puts'+'a'+'sty'='putsasty'
'putsasty' anagrammed gives 'STAYS PUT'.

'so' is the link.

Can you help me to learn more?

(Other definitions for stays put that I've seen before include "anchored" , "Remains" .)

I've seen this clue in the Sydney Morning Herald.
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