go back on
Verb
Meaning
fail to fulfill a promise or obligation
Source: WordNetSynonyms
Antonyms
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Examples
She backed out of her promise
After a debriefing he was allowed to go back on the air for NBC.
He therefore ordered the Egyptians to go back on the offensive, but their attack was quickly repulsed.
Everything I read lead me to stick to the decision not to go back on it even though I almost caved because I just wanted this to end.
I am willing to follow orders and never go back on my word.
"Like a true marine, he turned it down to go back on the front line with his brother marines," said Geri.