the.com/accidence

the boring-sounding cousin of grammar that's really the rulebook for how words shapeshift

means The branch of grammar dealing with the inflections of words — how nouns, verbs, and the like change their form to signal things like tense, number, gender, and case.

from From the Latin 'accidentia,' meaning 'things that happen' or 'non-essential properties,' itself from 'accidere,' to befall or happen to (the same root that gives us 'accident'). To old grammarians, the changing endings of a word were its 'accidents' — the variable bits that 'happen' to it without altering its essence. The word slipped into English through the medieval study of Latin grammar, where it picked up an extra 'c' partly by confusion with 'accident' itself.

not accident
Means word inflection, no spilled coffee involved
latin roots
From accidentia, 'things that happen to' words
old school
Was once a standalone subject in English schools
grammar slice
Covers endings, cases, tenses, plurals, conjugations
living term
Still used by linguists describing morphology today
for instance

english accidence — historical grammar term covering inflectional changes in old and middle english, documented in works like the oed since the 1600s

latin accidence — the declension and conjugation systems of latin, taught in classical grammar since roman times

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