Where does “casual” come from?

Casual comes from Middle French casuel, from Latin casualis, an adjective formed with the suffix -alis from cadere, meaning "to fall," ultimately from Proto-Indo-European ḱad-.

casual (English): Happening by chance; Coming without regularity;...

Definitions

  1. Happening by chance; Coming without regularity;...

Ancestry of “casual”, step by step

StepLanguageWordMeaning
1Middle Frenchcasuelfatal; of or relating to chance or fate
2Late Latincasualishappening by chance; fortuitous; casual
3Latincasusa fall, downwards movement; accident, chance; an...
4Latincaderepresent active infinitive of cadō; to fall, to...
5LatincadoI fall, I fall out; I die; I cease
6Proto-Italickadōfall, sink
7Proto-Indo-Europeanḱad-to fall

Words derived from “casual

Every word from Proto-Indo-European ḱad-Every word from Proto-Italic kadōEvery word from Latin cado