Where does “unawares” come from?

Unawares derives from English aware, prefixed with un-, ultimately tracing to Latin unus and Proto-Indo-European óynos, both meaning "one," with the sense developing toward "not knowing" through the notion of singular inattention.

unawares (English): Unexpectedly or by surprise; Inadvertently;...

Definitions

  1. Unexpectedly or by surprise; Inadvertently;...

Ancestry of “unawares”, step by step

StepLanguageWordMeaning
1English-sUsed to form regular plurals of nouns; Used to...
2English’s
3EnglishKingstownOS grid ref NY3959
4EnglishtownA settlement; an area with residential districts,...
5Middle Englishtountown
6Middle EnglishendeThe end or finishing of a thing; the terminal...
7Old Englishendeend, limit, border, corner
8Proto-Germanicandiin addition, furthermore, and
9Proto-Indo-Europeanh₂éntiopposite; near; in front
10Proto-Indo-Europeanh₂éntsforehead; front
11Proto-Indo-Europeanh₂ent-face; forehead; front
12Proto-Indo-Europeanh₂en-on, onto
Every word from Proto-Indo-European h₂en-Every word from Proto-Indo-European h₂ent-Every word from Proto-Indo-European h₂énts