clueless

mod. unaware. I have never seen anyone so totally clueless. What a dunce!

totally clueless

mod. ignorant (of something). (see also cluelessness.) Everybody was totally clueless as to what to do.

Name	Pronounced	Usage
Romeo	-	Italian
Terentiy	-	Russian
Seraphinus	-	Late Roman
RÍGhnach	-	Irish Mythology
Adonijah	ad-ə-NIE-jə (English)	Biblical
CloÉ	klo-E (French)	Portuguese, French