Where does “inaccuracy” come from?

Inaccuracy comes from English accurate, from Latin inaccuratus, combining Latin in- (not) and accuratus (done with care), ultimately from Proto-Indo-European roots meaning toward and in.

inaccuracy (English): The property of being inaccurate; lack of...

Definitions

  1. The property of being inaccurate; lack of...

Ancestry of “inaccuracy”, step by step

inaccuracy traces back through two separate lines of ancestry.

via English accuracy

StepLanguageWordMeaning
1EnglishaccuracyThe state of being accurate; being free from...
2EnglishaccurateTelling the truth or giving a true result; exact;...
3Latinaccūrātustaken care of, prepared with care, having been taken care of
4LatinaccuroI take care of, do something with care, attend or...
5Latinad-to; usually prefixed to verbs, in which cases it...
6Latinīn-un-, non-, not
7Latinînin, at, on, upon, from (space)
8Latinenlookǃ beholdǃ; reallyǃ?; come onǃ
9Proto-Italicenin
10Proto-Indo-Europeanh₁énin

via English in

StepLanguageWordMeaning
1EnglishinUsed to indicate location, inclusion, or position...
2Middle EnglishinAny kind of accomodation; particularly; A home or...
3Old Englishinin; Alternative form of inn
4Proto-West Germanic*in
Every word from Proto-Indo-European h₁én