Where does “unconscientiousness” come from?

unconscientiousness (English) comes from English unconscientious, from English conscientious, from Middle French conscientieux, from Latin cōnscientiōsus, from Latin cōnscientia, from Latin conscire, from Latin com-, from Latin con- — resin.

unconscientiousness (English): The quality of being unconscientious

Definitions

  1. The quality of being unconscientious

Ancestry of “unconscientiousness”, step by step

unconscientiousness traces back through two separate lines of ancestry.

via English unconscientious

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

via English Ness

StepLanguageWordMeaning
1EnglishNessAn Ulster princess and the mother of Conchobar mac Nessa and Findchoem in the Ulster Cycle of Irish mythology. Daughter of Eochaid Sálbuide. Also the mother of Cormac Cond Longas by incest with Conchobar mac Nessa
2Middle Englishnesse
3Old Englishnæsnot, not at all; not; first/third-person singular...
4Proto-Germanicnasjąfoothill; headland; cape
5Proto-Indo-Europeannéh₂snose
Every word from Proto-Germanic kweduz