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to fall behind

to fall behind

2 3.5
To move back when others move forward
  • phrasal verb
  • /fɔl bɪˈhaɪnd/
translation icon : quedarse atrás
  • During the race, she became tired and started to fall behind the other runners.

Examples

  • They walked slowly and fell behind the old man.

    Fiction book (1996)
  • But he's drained his reserves, and he even fell behind on his office rent last summer, though he caught up the next month.

    Academic text (2010)
  • Don't fall behind.

  • Smoky looks back at him when he realizes that Wyatt has fallen behind.

    Fiction book (1996)
  • If you don't pay attention in class, you might fall behind in your studies.

  • As the project progressed, some team members began to fall behind on their tasks.

Synonyms

to trail
vsto fall behind
91 2.2

Move slowly and fall behind others

emphasizes retreat relative to others who are advancing, not mere slowness
to get behind
vsto fall behind
47 3.0

To fail to keep up with work or a schedule

describes physical moving back when others advance rather than missed tasks
to lag
vsto fall behind
24 3.0

To move or develop more slowly than others

focuses on moving back or retreat rather than only slow progress
to drop back
vsto fall behind
17 3.6

To move to a position behind other players, for example to prepare a pass or to help defend

is about retreat due to others advancing rather than a planned repositioning
to fall back
vsto fall behind
8 3.8

To move behind others in speed or progress

is specifically about moving back while others are advancing
to drop behind
vsto fall behind
2 3.2

To fall behind others because you move or work more slowly

highlights retreat when others advance rather than general slower pace
to drop off
vsto fall behind
1 4.0

To move back from a place or position, often to a safer spot

specifically concerns falling behind others who are advancing, not general withdrawal
to strag
vsto fall behind
9.9

To fall behind when moving with others

is broader, applying to retreat when others advance beyond travel contexts

Antonyms

507 2.8

To continue at the same speed or level as others

417 3.4

To help something move forward or become better

How Far

to left at the post
  • Informal
8.0
lag
46 4.1
to fall behind
2 3.5
to trail
91 2.2

Surface Forms

fall behind infinitive
fallen behind past participle
falling behind present participle
falls behind third person singular

Morphology

fall + behind

The sense 'to not keep up' is directly derivable from combining 'fall' (to move down or drop) with 'behind' (in a less advanced or delayed position): together they describe moving into a less advanced position relative to others or a schedule. This composition follows a common motion + position pattern found across languages and in English phrasal verbs, so a B1 learner who knows both words will very likely understand the MWE.

Etymology

Fall behind comes from the picture of marching or hiking, where someone literally falls back and ends up behind the group because they must slow down or retreat, so it means 'to move back or retreat'.