inconvenant

improper, inappropriate

ɛ̃ . k ɔ̃ v . n ɑ̃
in not; lacking in + conven to suit, to be suitable + ant forming present participles and agentive adjectives
adjective Rare #40,030
improper, inappropriate Often describes behavior, language, or remarks that are socially unacceptable or indecent.
FR: Son comportement inconvenant a choqué les invités.
EN: His inappropriate behavior shocked the guests.

Ma grand-mère trouve inconvenant que je sorte avec mon professeur d'histoire.

My grandmother thinks it’s improper for me to date my history teacher.

Je pense que vous savez que c'est inconvenant.

I think you know that it’s inappropriate.

C'est très inconvenant.

That's very inappropriate.

— Love Actually (2003)

C'est tout à fait inconvenant selon mon opinion.

In my opinion, that is completely inappropriate.

Je pense que tu sais que c'est inconvenant.

I think you know that it's inappropriate.