Where does “sudden” come from?

Sudden derives from Middle English sodain, from Old French sodein, from Latin subitaneus, formed from Latin sub- and -aneus, itself built on -anus, all ultimately from Latin sub meaning beneath or under.

sudden (English): Happening quickly and with little or no warning;...

Definitions

  1. Happening quickly and with little or no warning;...

Ancestry of “sudden”, step by step

StepLanguageWordMeaning
1Middle EnglishsodeynSudden; happening or developing without buildup...
2Anglo-Normansodeinsudden; quickly with little or no warning
3Old Frenchsodain
4Vulgar Latinsubitanussudden
5Latinsubitāneussudden, unexpected
6Latinsubitusapproached; succeeded; occurred
7LatinsubeoI go under, come under; enter; I go up to,...
8Latinto go, to fare, to move (oneself) (any kind of animate or inanimate motion: walk, ride, sail, fly, etc.)
9Proto-ItalicI go
10Proto-Italicejō
11Proto-Indo-Europeanh₁éytito go, to be going
12Proto-Indo-Europeanh₁ey-to go

Words derived from “sudden

Every word from Proto-Indo-European h₁ey-