v. 1
To be moved downwards. To come down, to drop or descend.
v. 2
To change, often negatively. To become (chiefly used with negative states).
When did you first fall in love?
n. 1
A reduction in quantity, pitch, etc.
n. 2
The act of moving to a lower position under the effect of gravity.

Related words

Word family: fallen faller fall-off fallish fall-like falls fallway fallwear
Phrases: fall upon fall guy fall-out fall-back fall apart fall asleep fall-off fall away

Forms

Use in printed books, per decade from 1850 to 2019.

2 letters: go¹
3 letters: get¹, die¹, pin¹, dip¹
4 letters: come¹, turn¹, drop¹, pass¹, grow¹, trip¹, flow¹, fail¹, hang¹, sink¹, fade¹, dusk¹
5 letters: death¹, light¹, lower², shine¹, slope¹, spill¹, lapse¹, slump¹, stoop¹, droop¹
6 letters: become², happen², return², strike¹, settle², autumn², plunge¹, lessen², tumble², perish², topple², befall²
7 letters: decline², harvest², descent², descend², cascade², subside², plummet², devolve²
8 letters: moderate³, dropping², decrease², collapse², lowering³, twilight², diminish³, downfall², apostasy, languish²
9 letters: reduction³, waterfall³, nightfall², decadence³, downslope
10 letters: declension³
11 letters: destruction³, declination
12 letters: depreciation⁵

The small number after each word is its number of syllables (lower² = 2 syllables).