totally clueless

"My sister Susan was totally clueless as to my life here until she showed up, angry at our mother."

She showed me a few things, but I'm totally clueless about antiques.

They gave me a list of things to talk about, so I'm not totally clueless.

"You would be totally clueless," I was told on the phone.

If anything, people in this city seem totally clueless about their own behavior.

Tzi has no experience in taking care of children and is totally clueless about how to look after his son.

It made me realize how totally clueless we were about death.

He does like Mako's personality but is totally clueless about her feelings for him.

He is totally clueless about why the public sector workers are 'up in arms'

Either there's some bigger political agenda at work or they are totally clueless.