Definitions:

1. in debt or in need of repayment adverb
   • They fell behind with their mortgage payments.
2. in or into an inferior position adverb
   • They fell behind in their studies.
3. in or to or toward the rear adverb
   • Wherever I went, my dog followed behind.
4. remaining in a place or condition that has been left or departed from adverb
   • When they died, they left much unfinished work behind.

Synonyms:

• behindhand
• in arrears
• slow
• tail

NearBy Words:

• behind
• behind-the-scenes
• behindhand