Unfamiliar | Mean of unfamiliar in English Dictionary

/ˌʌnfəˈmɪljɚ/

• not frequently seen, heard, or experienced
1. He gets nervous when he is in unfamiliar surroundings.
2. an unfamiliar face/place
3. The book is full of unfamiliar words.
4. The language is unfamiliar to him. [=he does not know the language at all]
• not having any knowledge of something
1. I'm unfamiliar with that subject/language.