Gravity first, then almost everything else
Fall is one of the busiest short verbs in English. At its core it still means to drop under gravity: a stone falls, a person trips, rain comes down. Around that core the language has packed later uses that no longer involve a body in motion. Prices fall. Night falls. A city falls. A holiday falls on a Thursday. Someone falls asleep or falls in love. The seasonal noun, ordinary in North America and now old-fashioned in Britain, is the same word. None of that range arrived as a later loan. The origin of the word fall is native: English inherited the verb and then kept stretching it.
A strong verb English never replaced
Speakers of Old English already used feallan. It belonged to the seventh class of strong verbs, with a past tense feoll and a past participle feallen — the direct ancestors of modern fell and fallen. The physical sense of dropping from a height is in place from the start. So are bleaker meanings that never quite left the verb: to fail, to decay, to die. Coming suddenly to the ground is recorded by late Old English.
The form passed into Middle English as fallen and then simplified in spelling. English did not borrow a French or Latin replacement for this everyday motion, the way it did for so many other common ideas after the Conquest. The same inheritance is visible across West and North Germanic: Dutch vallen, German fallen, Old Norse and modern Swedish falla, Danish falde, West Frisian falle. Gothic, unusually among the early Germanic languages, does not preserve a matching verb.
The related noun is almost as old. By about 1200, writers use fall for a drop to the ground, a descent, the collapse of a building. That noun continues a Proto-Germanic formation of the type *falliz or *fallą. Beside it sat Old English fealle, a snare or trap — a device whose point is to make something drop. Historical dictionaries treat the modern noun as a blend of Old English feall, related Old Norse fall, and a fresh formation from the verb. What is not in doubt is that the noun, like the verb, is Germanic rather than Romance.
One morphological fact belongs here because modern spelling conceals it. English fell meaning to cut down a tree is the old causative, “cause to fall,” from a related Germanic verb (Old English fyllan). The past tense of fall and the infinitive of the woodcutter are historically different words that happen to look alike now.
The Germanic stage is firm; the deeper root is not
Reconstruction is solid at the Germanic stage: Proto-Germanic *fallaną, a strong verb meaning to fall. Beyond that, handbooks disagree.
Older dictionary etymologies still offered to general readers reconstruct a Proto-Indo-European root of the shape *pol- or *peh₃lH-, “to fall.” On that view the Germanic verb sits with Lithuanian pulti and puolu, Old Prussian aupallai (glossed as “finds,” literally “falls upon”), and Armenian p‘ul, “downfall.” American Heritage’s Indo-European notes have long used a similar *phol- reconstruction.
More recent comparative work treats that simple root as outdated. Sergio Neri, Guus Kroonen, and the addenda to the Lexikon der indogermanischen Verben explain Germanic *fallaną as a univerbation: a preverb *h₂epo, “off, away,” fused with the root *h₃elh₁-, “to collapse, perish, fall.” On that account the Germanic verb is a cousin of Greek ollumi and apollumi (“destroy, lose, kill”), Lithuanian pulti, and perhaps Latin aboleo (“destroy”), though the Latin link is not certain.
The disagreement should stay visible. The Germanic family is not in doubt. The exact Indo-European packaging — a dedicated “fall” root versus a fused “away + perish” verb — remains a specialist argument. Older sources sometimes dragged in Latin fallere, “to deceive,” the ancestor of English false; that is a different word and a different history.
How the senses multiplied
Most of the figurative uses were already in motion in Middle English. Empires and governments fall from about 1200. Passing casually into a condition — falling silent, falling ill — is early thirteenth century. The theological Fall, the lapse of Adam and Eve, is also early thirteenth century; later English often capitalizes it when the Garden of Eden is meant.
Dates cluster after that. To fall asleep is late fourteenth century; Middle English also tried slide asleep. A face falls in disappointment from the same general period. To fall in love is attested from the 1520s. Prices fall from the 1570s; so does dying in battle; land that slopes “falls” from the same century. Night falls around 1600. Temperature falls from the 1650s. A city under siege falls from the 1580s. Wrestling takes a fall from the 1550s. A cascade is a fall, or falls when the drop is in stages, from the 1570s, after earlier fall of water in the mid-fifteenth century.
Later idioms keep the same image. Fall through, “come to nothing,” is recorded from 1781; fall for, “be taken in,” from 1903; fall guy from 1906. English kept using one native verb for any sudden drop: of a body, a value, a government, a moral standing, or a person into a new state.
Leaves, harvest, and a transatlantic split
The seasonal sense is the one that still surprises British readers. In the sixteenth century English writers named the time of year the fall of the leaf, a phrase in use from the 1540s. By the 1660s that description had shortened to fall. The older native season name had been harvest. Autumn, from Latin autumnus through Old French, had entered English in the late fourteenth century and competed with both.
Both autumn and fall were British words, and both crossed the Atlantic. In Britain autumn won as the unmarked name; fall as a season became archaic there. In the United States and Canada it remained ordinary speech. The pattern matches spring, which began as spring of the leaf.
The American season name is not an American invention. It is an English metaphor that one variety of the language kept and the other mostly set aside. When someone says fall for the months after summer, they are still using a sixteenth-century English picture of leaves coming down — the same Germanic verb that already meant drop, fail, and die in Old English, long before anyone needed a second word for the season.