Swear GI slyly listens in (7)

I believe the answer is:

earwigs

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'swear gi slyly listens in' is the definition.
I can't judge whether this definition defines the answer.

'swear gi slyly' is the wordplay.
'slyly' is an anagram indicator.
'swear'+'gi'='sweargi'
'sweargi' anagrammed gives 'EARWIGS'.

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(Other definitions for earwigs that I've seen before include "Elongated insects" , "listens in furtively" , "Eavesdrops on the insects" , "Bugs" , "Insect with pincers" .)

I've seen this clue in The Times.

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