Etymology Explorer › English

Where does “inefficient” come from?

Inefficient comes from Middle English in- plus efficient, ultimately from Latin inefficiens, combining Latin in- (not) with efficiens (accomplishing), derived from Latin in (into) and a root meaning to work or produce.

inefficient (English): Not efficient; not producing the effect intended...

Definitions

  1. Not efficient; not producing the effect intended...

Ancestry of “inefficient”, step by step

StepLanguageWordMeaning
1Englishin-in, into, towards, within; in, into; Used with...
2Middle Englishin-—
3Old Englishin-in, into; on, upon; internal, positioned on the...
4Old Englishinin; Alternative form of inn
5Proto-West Germanic*in—
6Proto-Germanicinin; into
7Proto-Indo-Europeanénin

Words derived from “inefficient”

  • inefficiently
Every word from Proto-Indo-European én →