(literally) To come out of something by falling. / (intransitive, idiomatic) To cease to be on friendly terms.

Synonym of falling out (“rift following a disagreement or quarrel”)

(US) In the middle of fall.

(US) Happening in the middle of fall.

(US) The middle of fall.

(cricket) The side's total score when a particular batsman was out.

(intransitive, idiomatic) To be unsuccessful, come to nothing; to be cancelled; not to proceed.

(geomorphology) A geomorphologic unconformity marking a boundary between an upland region and a plane; sometimes marked by a series of waterfalls on rivers that cross it.

(baseball) The World Series.

(informal) One who is gullible and easily duped. / (informal) A scapegoat.