fall in
B1Neutral, with specific uses in formal/military and informal contexts.
Definition
Meaning
To move into a line or formation, as of soldiers; to collapse inward; to agree to something.
Used for things like prices decreasing, love developing, schedules coinciding, or structures collapsing inwards. Can also mean to meet an obligation or conform to a plan.
Linguistics
Semantic Notes
Primarily a phrasal verb. Meaning depends heavily on context: physical collapse, alignment, agreement, or decrease.
Dialectal Variation
British vs American Usage
Differences
Minimal difference in core meanings. 'Fall in' as 'collapse' might be slightly more common in UK reports of buildings or cavities. Both use the military sense equally.
Connotations
In both, the military sense carries strong discipline connotations. The 'agree to' sense can imply reluctant acquiescence.
Frequency
Comparatively frequent in both varieties.
Vocabulary
Collocations
Grammar
Valency Patterns
fall in (intransitive)fall in with [someone/something]fall in love with [someone]Vocabulary
Synonyms
Strong
Neutral
Weak
Vocabulary
Antonyms
Phrases
Idioms & Phrases
- “fall in love”
- “fall in line”
- “fall in with the wrong crowd”
Usage
Context Usage
Business
"Share prices fell in after the quarterly report." (Meaning: decreased)
Academic
"The data points fall in a clear linear pattern."
Everyday
"The ceiling fell in during the storm." / "He finally fell in with our plan."
Technical
"The trench requires shoring to prevent the sides from falling in." (Engineering/Construction)
Examples
By Part of Speech
verb
British English
- The soldiers were ordered to fall in.
- Part of the garden wall fell in after the heavy rains.
- Do you think he'll fall in with our scheme?
American English
- Troops, fall in!
- The old mine shaft could fall in at any time.
- She fell in with a new group of friends at college.
Examples
By CEFR Level
- The children fell in line behind the teacher.
- Be careful, the roof might fall in!
- Oil prices have fallen in recent weeks.
- He fell in love with the city immediately.
- After some persuasion, she fell in with our proposal.
- The sides of the excavation must be supported to prevent them from falling in.
- Investors fell in behind the CEO's controversial new strategy.
- The archaic legal framework is gradually falling in on itself.
Learning
Memory Aids
Mnemonic
Imagine soldiers FALLing INTO a straight line = FALL IN. Or, a roof FALLing INTO the house = FALL IN.
Conceptual Metaphor
AGREEMENT IS ALIGNMENT (fall in with a plan), COLLAPSE IS DOWNWARD MOTION (ceiling fell in), LOVE IS A TRAP (fall in love).
Watch out
Common Pitfalls
Translation Traps (for Russian speakers)
- Do not confuse with 'fall into' (physical entry). 'Fall in love' is a fixed phrase; direct translation of components fails.
- "Fall in price" is 'снижаться', not a physical fall. 'Fall in with' meaning agree is not 'упасть в'.
Common Mistakes
- Using 'fall in' instead of 'fall into' a hole. Incorrect: *'He fell in the pool.' Correct: 'He fell into the pool.' (unless 'fell in' is short for 'fell in love' contextually)
- Overusing the military sense in non-military contexts.
Practice
Quiz
In which sentence does 'fall in' mean 'agree to'?
FAQ
Frequently Asked Questions
No, it is an inseparable phrasal verb. You cannot say 'fall the roof in'.
'Fall in' typically means collapse or align. 'Fall into' means to enter something, often by accident (fall into a hole) or a category (fall into despair).
Yes, but almost exclusively in the fixed phrase 'fall in love'. Other emotions use 'fall into' (fall into despair) or just the simple verb.
It's understood but not common in casual talk. It's used metaphorically ("Everyone fell in behind the leader") more often than literally.