Where does “functional” come from?

Functional comes from English function, from Latin functio (a performance or execution of duty), derived from the past participle functus of Latin fungor (to perform or execute).

functional (English): In good working order; Useful; serving a purpose,...

Definitions

  1. In good working order; Useful; serving a purpose,...

Ancestry of “functional”, step by step

functional traces back through two separate lines of ancestry.

via French fonctionnel

StepLanguageWordMeaning
1Frenchfonctionnelfunctional; Of or relating to bodily functions
2Frenchfonctionfunction; role
3Middle Frenchfunctionfunction what something's intended use is
4Latinfunctiōperformance, execution (of a task)
5Latin-tiōtion, -ation, -ing
6Latindissertātiō(spoken) dissertation, discourse, disquisition
7Latindissertusarranged, disposed; explained
8Latindissereresecond-person singular future passive indicative...
9Latindis-asunder, apart, in two; reversal, removal;...
10Latincalceusshoe
11Latincalxlimestone; chalk; the finish line
12Ancient Greekχάλιξsmall stone, pebble; gravel, rubble

via English function

StepLanguageWordMeaning
1EnglishfunctionWhat something does or is used for; A...

Words derived from “functional

Every word from Ancient Greek χάλιξ
functional — Etymology, Origin & Word History | Etymology Explorer