PIE *pol, *spol「落ちる」が語源で、語源的にはおそらくspill「裂ける」と同じであろう。
英語の語源
fall
fall: [OE] The verb fall comes from prehistoric Germanic *fallan, which also produced German fallen, Dutch vallen, and Swedish falla. The noun is partly a survival of Old English feall, partly a borrowing from the related Old Norse fall, but probably mostly a new formation based on the verb. The sense ‘autumn’, now restricted to American English, originated in the 16th century from an earlier phrase fall of the leaf. (Fell ‘cut down’ is related: etymologically it means ‘cause to fall’.) => fell
fall (v.)
Old English feallan (class VII strong verb; past tense feoll, past participle feallen) "to drop from a height; fail, decay, die," from Proto-Germanic *fallan (cognates: Old Frisian falla, Old Saxon fallan, Dutch vallen, Old Norse falla, Old High German fallan, German fallen, absent in Gothic).
These are from PIE root *pol- "to fall" (cognates: Armenian p'ul "downfall," Lithuanian puola "to fall," Old Prussian aupallai "finds," literally "falls upon").
Meaning "come suddenly to the ground" is from late Old English. Of darkness, night, from c. 1600; of land sloping from 1570s; of prices from 1570s. Of empires, governments, etc., from c. 1200. Of the face or countenance from late 14c. Meaning "to be reduced" (as temperature) is from 1650s. Meaning "die in battle" is from 1570s. Meaning "to pass casually (into some condition)" is from early 13c.
To fall in "take place or position" is from 1751. To fall in love is attested from 1520s; to fall asleep is late 14c. To fall down is early 13c. (a-dun follon); to fall behind is from 1856. Fall through "fail, come to nothing" is from 1781. To fall for something is from 1903.
To fall out is by mid-13c. in a literal sense; military use is from 1832. Meaning "have a disagreement, begin to quarrel" is attested from 1560s (to fall out with "quarrel with" is from late 15c.).
fall (n.)
c. 1200, "a falling to the ground; a dropping from a height, a descent from a higher to a lower position (as by gravity); a collapsing of a building," from the source of fall (n.). (Old English noun fealle meant "snare, trap.") Meaning "a sinking down, subsidence" Of the coming of night from 1650s. Meaning "downward direction of a surface" is from 1560s, of a value from 1550s. Theological sense, "a succumbing to sin or temptation" (especially of Adam and Eve) is from early 13c.
Sense of "autumn" (now only in U.S. but formerly common in England) is by 1660s, short for fall of the leaf (1540s). Meaning "cascade, waterfall" is from 1570s (often plural, falls, when the descent is in stages; fall of water is attested from mid-15c.). Wrestling sense is from 1550s. Of a city under siege, etc., 1580s. Fall guy is from 1906.
例文
1. Sometimes things have to fall apart to make way for better things.
谷底に到達しなければ、徐々に良くなることがあります。
毎日一言
2.Here 's an inside tip：The faster you rise，the harder you fall .
早く登れば登るほど、転んで痛くなるという小さなアドバイスをします。
米ドラマ『ゴシップガール』
3.Over a given period，the value of shares will rise and fall .
株式の価値は、ある特定の時期に下落することがあります。
4.I hope that our appeals will not fall on deaf ears.
私たちの呼びかけに誰も相手にしてくれないことを願っています。
5.He had wrenched his ankle badly from the force of the fall .