back out
[verb]
Synonyms: often with of
withdraw, abandon, cancel, give up, go back on, resign, retreat

[TahlilGaran] English Synonym Dictionary ▲

back out phrasal verb (see also back)
to decide not to do something that you had promised to do:
It’s too late to back out now.
After you’ve signed the contract, it will be impossible to back out.
back out of
The government is trying to back out of its commitment to reduce pollution.

[TahlilGaran] Dictionary of Contemporary English ▲

back out
back out (of (something))
to refuse to do something agreed to earlier.
I said I'd help, and I can't back out now.

[TahlilGaran] English Idioms Dictionary ▲

back out
to get out of an agreement, to fail to keep a promise; to withdraw from an agreement or promise
The property developer backed out of the plan to build the new city hall.

The company backed out of the agreement with the foreign firm.

[TahlilGaran] English Idioms Dictionary ▲

back out
v. phr.
1. To move backwards out of a place or enclosure.
Bob slowly backed his car out of the garage.
2. To withdraw from an activity one has promised to carry out.
Jim tried to back out of the engagement with Jane, but she insisted that they get married.
Compare: BEG OFF, GO BACK ON.

[TahlilGaran] English Idioms Dictionary ▲