re ‧ nege /rɪˈniːɡ, rɪˈneɪɡ $ rɪˈnɪɡ, rɪˈniːɡ/ BrE AmE verb [intransitive]
[ Date: 1500-1600 ; Language: Medieval Latin ; Origin: renegare ; ⇨ ↑ renegade ]
formal renege on an agreement/deal/promise etc to not do something you have promised or agreed to do SYN go back on :
They reneged on a pledge to release the hostages.