on sight

Back home, many of them would have shot each other on sight.

You are right, most any one of us would probably be killed on sight.

More than one man looking for someone they knew on sight.

I had yet to learn how to tell the patients from the staff on sight.

The two men hit it off in a big way on sight.

It wasn't likely any of them would know me on sight,!

But outside, he was likely to be shot by a guard on sight.

But other than this, it was difficult to say what she thought of him on first sight.

Two hundred years, give or take, and I knew you on sight.

People are said to hate him on sight for his looks and money.