Where does renig come from? On a completely historical, FYI note: renege has been found in the written record since the 1500s, where it originally meant “renounce” or “abandon” It's rooted in the Latin negare, “to deny,” related to the word negative.

What does renege mean in slang?

To renege is to go back on your word or fail to keep a promise. Not quite lying, reneging is more a sin of omission — failing to do what you said you would. The Latin negāre means "to deny," so by reneging on your word, you are denying someone whatever you promised them.

What is the noun form of renege?

Dictionaries state that "renege" means to go back on one's word and that "reneger" is the noun form of the word.