Etymology Explorer › English

Where does “conscientious” come from?

Conscientious comes from Middle French conscientieux, from Latin conscientiosus, derived from Latin conscientia meaning awareness or knowledge of one's own thoughts, ultimately formed from Latin cum meaning with and the abstract noun suffix -ia.

conscientious (English): Thorough, careful, or vigilant in one’s task...

Definitions

  1. Thorough, careful, or vigilant in one’s task...

Ancestry of “conscientious”, step by step

StepLanguageWordMeaning
1Middle Frenchconscientieuxconscientious
2Latincōnscientiōsus—
3Latincōnscientia—
4Latinconscirepresent active infinitive of cōnsciō; to know, to...
5Latincom-allomorph of con-
6Latincon-Used in compounds to indicate a being or bringing...
7Latincumwith, along with; at; -fold
8Old LatincomAlternative form of cum
9Proto-Italickomwith, along, at
10Proto-Indo-Europeanḱómbeside, near, by, with
11Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
12Middle Englishkyt—
13Germankitt—
14Old High Germankuti—
15Proto-West Germanickwidugum, resin
16Proto-Germanickweduzresin
17Proto-Indo-Europeangʷet-resin, gum; to say, speak
18Proto-Indo-Europeangū-to bend; curve; arch; vault; to bow, bend, arch,...

Words derived from “conscientious”

  • conscientiously
  • conscientiousness
  • unconscientious
  • overconscientious
  • nonconscientious
Every word from Proto-Indo-European gū- →