1610s, "done with care," from Latin accuratus "prepared with care, exact, elaborate," past participle of accurare "take care of," from ad "to" (see ad-) + curare "take care of" (see cure (n.1)). The notion of doing something carefully led to that of being precise (1650s). A stronger word than correct (adj.), weaker than exact (adj.). Related: Accurately; accurateness.
word-forming element making nouns of quality, state, or condition, a confusion in English of three similar suffixes from Latin:
1. in primacy, etc., from Old French -acie and directly from Medieval Latin -acia, Late Latin -atia, making nouns of quality, state, or condition from nouns in -as.
2. in advocacy, etc., from Late Latin -atia, forming nouns of state from nouns in -atus.
3. in fallacy, etc., from Latin -acia, forming nouns of quality from adjectives in -ax (genitive -acis). Also forming part of -cracy. It has been extended in English to nouns not found in Latin (accuracy) and to non-Latin words (piracy).
<a href="https://www.etymonline.com/word/accuracy">Etymology of accuracy by etymonline</a>
Harper, D. (n.d.). Etymology of accuracy. Online Etymology Dictionary. Retrieved $(datetime), from https://www.etymonline.com/word/accuracy