Define Unbeknownst Meaning

1. happening or existing without the knowledge of someone specified —usually used with to (Merriam-Webster Online).

2. a word that pretentious pricks use to try to sound smarter than they actually are.

Unbeknownst to you, I have been fucking your sister for the past six months.

My dad has been sick for years, unbeknownst to the family.
By Mureil
Unbeknownst To Speed
A phrase used to point out anything obvious or oversaid.

Person #1: Hey, it's 2010 now!
Person #2: Unbeknownst to Speed.
By Karla