Where does “conscientiously” come from?

Conscientiously comes from Middle French conscientieux, from Latin conscientia meaning "joint knowledge or awareness," from cum meaning "with" and the suffix -ia.

conscientiously (English): In a conscientious manner; attentively

Definitions

  1. In a conscientious manner; attentively

Ancestry of “conscientiously”, step by step

StepLanguageWordMeaning
1EnglishconscientiousThorough, careful, or vigilant in one’s task...
2Middle Frenchconscientieuxconscientious
3Latincōnscientiōsus
4Latincōnscientiaknowledge shared with others, being in the know or privy to, joint knowledge; complicity
5Latinconscirepresent active infinitive of cōnsciō; to know, to...
6Latincom-allomorph of con-
7Latincon-Used in compounds to indicate a being or bringing...
8Latincumwith, along with; at; -fold
9Old LatincomAlternative form of cum
10Proto-Italickomwith, along, at
11Proto-Indo-Europeanḱómbeside, near, by, with
12Proto-Indo-EuropeanḱeDeictic particle, here; Post-positional...
13Middle Englishkyt
14Germankittputty certain kinds of cement used for fixing e.g. window panes
15Old High Germankuti
16Proto-West Germanickwidugum, resin
17Proto-Germanickweduzresin
18Proto-Indo-Europeangʷet-resin, gum; to say, speak
Every word from Proto-Indo-European gʷet-
conscientiously — Etymology, Origin & Word History | Etymology Explorer