intransitive verb 1 : to sink inward the roof fell in 2 : to take one's proper place in a military formation see also fall in with

If there is a fall in demand, the price goes down. The report indicates a fall in the unemployment rate.

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.

Definition of fall in phrasal verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

/fɔl ɪn/ IPA guide Other forms: fell in; fallen in; falling in; falls in Definitions of fall in verb break down, literally or metaphorically synonyms: break, cave in, collapse, founder, give, give way

fall in meaning, definition, what is fall in: if the roof, ceiling etc falls in, it fa...: Learn more.

Oct 13, 2025 · fall in (third-person singular simple present falls in, present participle falling in, simple past fell in, past participle fallen in) (intransitive) To collapse inwards.

The most common meaning of the phrasal verb fall in is to collapse or cave in. It is often used to describe a structure or object that has suddenly and unexpectedly given way, such as a roof or …

to become lowered or directed downward: Her eyes fell as she began to explain why she had stolen the money. to give in to temptation or sin, esp. to become unchaste: He had fallen into sin.

Her mind rebelled at the coincidence; the truth was beginning to fall in on her like a collapsing wall of hope, burying her alive.