perfect stranger

Translations
совершенно незнакомый человек
She asked a perfect stranger for directions.
Она спросила дорогу у совершенно незнакомого человека.
Definitions
A perfect stranger refers to someone who is completely unknown to another person, with no prior acquaintance or relationship, often implying a sense of anonymity or unfamiliarity.
Words
stranger

noun
незнакомец
perfect

adjective
идеальный