未婚

彼(かれ)は未婚だけど子供がいた。

He had a child even though he wasn't married.

その実験は未婚の男性１００人(にん)を対象に行われた。

The experiment was made on a hundred unmarried males.

私(わたし)の兄(あに)は、未婚なので、所帯を持たず、奉公人と一緒によその家(いえ)で食事をしていた。

My brother, being yet unmarried, did not keep house, but boarded with his apprentices at the home of another family.

日本人(ひと)には、見知らぬ人(ひと)と会話を始めてまだくつろいだ気分にならないうちに、相手の、年齢や地位、既婚か未婚かなどの個人(ひと)的な事柄を知りたがる傾向がある。

There is a tendency for Japanese to want to know a certain amount of personal information about someone such as age, position and whether they are married or not, before they feel comfortable talking with a stranger.