Examples of using "незнакомца" in a sentence and their english translations:
The dog sniffed at the stranger.
The dog was barking at a stranger.
The dog barked at the stranger.
She eyed the stranger suspiciously.
We saw a stranger walking outside.
He's quite formal when he meets a stranger.
I asked the stranger where he was from.
I asked the stranger what his name was.
Tom asked the stranger who he was.