back out

to withdraw from a promise, agreement, etc

• You backed out.
• You can't back out.
• I'm not backing out.
• The buyer backed out.
• We can't back out now.
• Tom can't back out now.
• I knew Tom would back out.
• Are you backing out already?
• You can't back out on me now.
• I thought you might back out.
• It's too late to back out now.
• It's too late for us to back out.
• She backed out at the last moment.
• I'm counting on you not to back out.
• You're not backing out now, are you?
• If you back out, the deal won't go through.
• You can't back out of your responsibilities.
• I'm not trying to back out of that agreement.
• The wholesalers might try to back out of the deal.
• We were forced to back out of a contract due to the earthquake.
• Harry had to back out of the competition because of a broken arm.
• Don't tell me you're going to back out after all the plans we've made.
• To Bob's disappointment, several of those who had promised to help him afterwards backed out.