Leave a ring on (7)

I believe the answer is:

abandon

'leave' is the definition.
(to abandon is to leave or desert)

'a ring on' is the wordplay.
'ring' becomes 'band' (synonyms).
'a'+'band'+'on'='ABANDON'

(Other definitions for abandon that I've seen before include "Lack of constraint" , "Desert - recklessness" , "Czech city" , "Desert, strand" , "Permanently desert" .)

I've seen this clue in The Guardian and The Times.

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