Translation guide
The English word "familiar" covers several distinct meanings: knowing something well, being on close terms with someone, and something being well-known or easily recognized. Japanese expresses these with different words and patterns.
To express that you know a topic, place, or thing well through experience.
Means having detailed knowledge about something. Used with the particle に.
He is familiar with Japanese history.
More formal, implies deep expertise or thorough familiarity.
She is familiar with international law.
Literally "know well," a straightforward way to say you are familiar with something.
Are you familiar with this area?
To describe a relationship where you are friendly and casual with someone.
Describes a close, friendly relationship. Often used for friends.
I am on familiar terms with him.
Means to get along well, be on good terms. Very common in casual speech.
We are very familiar with each other.
Implies a relationship where you can relax and be yourself without formality.
To say that something is commonly known or seen, not strange or new.
Means 'familiar' in the sense of 'well-known and often encountered'. Used as a pre-noun adjective.
This is a familiar tune.
Literally 'seen and accustomed to', used for visual familiarity.
a familiar landscape
Used for sounds or voices you are accustomed to hearing.
I heard a familiar voice.
A straightforward phrase meaning 'well-known'.
That story is familiar.
To describe behavior that is too casual or forward, often with a negative nuance.
Both mean 'close' or 'familiar', but 親しい is slightly more formal and can describe a one-sided feeling (I feel close to him), while 仲がいい implies a mutual good relationship. 仲がいい is more common in everyday speech.
He is a close (familiar) friend.
Those two are close, aren't they?
The katakana word ファミリア (famiria) exists but is not commonly used for 'familiar'. It might be understood in some contexts (like brand names), but it's not a natural translation. Stick to the Japanese options above.
Are you familiar with this software?
彼は気安い友達だ。
He is a familiar friend (easy to be around).
Means impudent or shameless, often implying taking liberties due to assumed familiarity.
This may be a familiar request, but...