To go on was to venture into the totally unknown.

We think it's natural to court a totally unknown person in a bar or club.

They were in a language, whose import was totally unknown to him.

They spoke a totally unknown language, very softly and we understood nothing.

The mountains where she found herself were totally unknown to her.

Until we become aware of something, that thing remains totally unknown to us.

It is totally unknown that when exactly this danced form came in to practice.

I looked again at the picture of a man so familiar yet totally unknown to me.

For another, this is a situation of totally unknown consequences.

What would happen if he emerged in a region which was totally unknown to me?