Groped around for fastener (4)

I believe the answer is:

rope

'for fastener' is the definition.
(thesaurus)

'groped around' is the wordplay.
'around' indicates the answer is hidden within the clue.
'ROPE' is hidden within 'groped'.

(Other definitions for rope that I've seen before include "Length of material used to tie or secure things" , "Cable, cord, hawser" , "Strong line" , "Stout cord" , "Hitch" .)

I've seen this clue in The Mirror.

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