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Project status vocabularyphrasal verb · /fɔːl bɪˈhaɪnd/

fall behind

In simple English

When you fall behind on a task or project, you're not progressing as quickly as the schedule requires. You may need to catch up or re-prioritize.

Someone heard this phrase in a meeting and wants to know what it means when work is delayed.

At a glanceCEFR B1–B2
Commonness
Versatility
FormalityCasualFormalNeutral
Spoken ↔ WrittenSpokenWrittenBoth
Directness ↔ DiplomaticDirectDiplomaticNeutral
Region

Say it like this

I'm falling behind on my sprint tasks.
We fell behind schedule due to unexpected bugs.
Don't let yourself fall behind — ask for help early.
The team has fallen behind by about two days.
If we fall behind any more, we'll need to cut scope.

Real examples

Standup

"I fell behind on the API integration yesterday because of some dependency issues."

Slack message

"Heads up — I'm falling behind on the dashboard tickets. Might need to push the deadline."

GitHub PR

"This PR is late because I fell behind due to the urgent hotfix last week."

Jira ticket

"Status: In Progress. Note: Fell behind due to unclear requirements. Waiting for clarification."

Retrospective

"We fell behind in the second week because we underestimated the testing effort."

Sprint planning

"If we take on this extra story, we risk falling behind on the core features."

Pair programming

"Let me catch up — I fell behind when you refactored that function."

Don't say this

I am fall behind on my tasks.
I am falling behind on my tasks.Use 'falling' (continuous form) after 'am' to show it's happening now.
I fell behind from the schedule.
I fell behind on the schedule.The correct preposition is 'on' (fall behind on something) or no preposition for 'fall behind schedule.'
I have fall behind.
I have fallen behind.With 'have,' use the past participle 'fallen,' not the base form 'fall.'

Other forms

base form

fall behind

"I don't want to fall behind on this project."

present continuous

falling behind

"We're falling behind on our sprint goals."

simple past

fell behind

"I fell behind last week due to illness."

present perfect

have/has fallen behind

"The team has fallen behind by two days."

Often used with

fall behind scheduleNot meeting the planned timeline
fall behind on tasksTasks are not completed on time
fall behind on workGeneral work is delayed
fall behind on deadlinesMissing target completion dates
risk falling behindThere is a chance of becoming delayed
fall further behindBecoming even more delayed than before

Similar words

get behindSame meaning, slightly more casual
lag behindEmphasizes being slower than others or the plan
run lateMore about time than progress on tasks
slipOften used for deadlines: 'The deadline slipped'
be delayedMore formal, often used in written status updates

Opposites

catch upstay on trackget aheadbe on schedulekeep pace

Practice

Try it

4 quick exercises

Choose the most natural phrase

1. How would you tell your team you're late on your tasks?

Find the error

2. We have fall behind on the sprint because of the outage.

Complete the sentence

3. If we don't get more help, we'll _____ behind on the release.

Rewrite this sentence

4. Make this more natural: 'I was ill so my work became late.'

More words

Questions

Quick poll

Have you said "fall behind" in a standup this week?

Want more structured practice like this? Our English for Programmers course covers real workplace English in depth.

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