/ rɪˈlent; NAmE / verb [ v ]
1.
to finally agree to sth after refusing
SYN give in :
'Well, just for a little while then,' she said, finally relenting.
2.
to become less determined, strong, etc. :
After two days the rain relented.
The police will not relent in their fight against crime.
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WORD ORIGIN
late Middle English (in the sense dissolve, melt ): based on Latin re- back + lentare to bend (from lentus flexible).