IPA: /ˌʌnəˈwɛrz/
KK: /ʌnəˈwɛrz/
In a way that is unexpected or without prior notice; happening suddenly or without preparation.
The sudden storm caught us unawares, and we had no time to find shelter.
Unawares → It is formed from "un-" (meaning not) and "awares" (from Old English "ware", meaning aware or conscious). The word "unawares" means not being aware or conscious of something, often used to describe a situation where someone is caught off guard.
Think of 'not' ('un-') being aware ('awares') — that's why unawares means not being aware.