fall behind
Third Person
falls behind
Present Participle
falling behind
Past Tense
fell behind
Past Participle
fallen behind
1
to fail to keep up in work, studies, or performance
- The company fell behind its competitors in AI research
- He began to fall behind in class after missing several lessons.
- We risk falling behind other nations in green tech.
- Try not to fall behind in your assignments.
- Don't fall behind on your project deadlines.
2
to owe money due to not paying when required
- They've fallen behind on their mortgage.
- I'm starting to fall behind on credit card bills.
- She fell behind with her rent after losing her job.
- We fell behind on utilities during the winter.
- He's months behind on child support.