fall in

British  

verb

1. to collapse; no longer act as a support

2. to adopt a military formation, esp as a soldier taking his place in a line

3. (of a lease) to expire

4. (of land) to come into the owner's possession on the expiry of the lease

5. (often foll by with)

   1. to meet and join

   2. to agree with or support a person, suggestion, etc

6. to make a mistake or come to grief

7. to become pregnant

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1. the order to adopt a military formation

fall in Idioms  

1. Take one's place in formation or in the ranks, as in The sergeant ordered the troops to fall in . A related expression is fall into , as in They all fell into their places . [Early 1600s] Also see fall into .

2. Sink inward, cave in, as in The snow was so heavy that we feared the roof would fall in . [Early 1700s] Also see under drop in ; the subsequent idioms beginning with fall in ; fall into .

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Example Sentences

This delayed reaction means that even if oil prices begin to fall in the coming weeks, the momentum of that initial increase will remain embedded in the economy.

From Barron's • Apr. 15, 2026

Eurozone industrial output unexpectedly rose 0.4% in February after a 0.8% fall in January, defying economists’ expectations.

From The Wall Street Journal • Apr. 15, 2026

Jeff Norton, whose work focuses on book-to-screen adaptations, said he looks for characters he can fall in love with when choosing books to pitch for development.

From Los Angeles Times • Apr. 13, 2026

Another, zooming in on his face, reads: “Just to look at you I fall in love.”

From The Wall Street Journal • Apr. 12, 2026

“If you fall in, they’ll never be able to get you out. You’ll just keep falling forever.”

From "Amari and the Night Brothers" by B.B. Alston

Related Words

• appear
• arrive
• become
• enter
• get
• happen
• hit
• materialize
• move
• occur
• reach
• show
• show up