inhabituel in English:

His visit was a quite unaccustomed event.

/ˌʌn.əˈkʌs.təmd/ The ​weather ​presented a ​particular ​challenge, ​especially for ​soldiers unaccustomed to ​subarctic ​conditions.

That's unusual.

Valencia is famous for its unusual architecture.

You don't have to come up with an unusual topic for your speech.

In the case of patient death during the course of medical treatment, even if there is medical error present, it is not automatically legally considered to be an "unusual death."

Innovation has something to do with the faculty to notice unusual phenomena.

That's an unusual hobby she's got, the transfer student. "She's cute so it's fine with me."

Some clarinetists use clarinets tuned to A instead of B flat in passages which would otherwise be written in unusual keys.

In an unusual move, this school's big band uses slide trumpets and valve trombones exclusively.

But in many ways, the bird called Alex is unusual, for it has shown the kind of mental abilities that scientists once thought only humans had.

Engagement gifts should always be unusual and special to honour the occasion.

creepiest, most unusual person I've ever met.

If something is unusual, it does not happen very often or you do not see it or hear it very often(2) If you describe someone as unusual, you think that they are interesting and different from other people

1. Everything here is so unusual. / 2. It is not so unusual.

The unusual architecture of Astana makes it look like a space-age city.

You cant find some really unusual things in this shop.