別人（べつじん、betsujin）
- different person

The Japanese word 別人 ([別人]) means "another person," "a different person," or "someone else." It refers to someone who is not the person being discussed or is significantly changed from their previous self. This change can be physical, in personality, or in behavior. It emphasizes the contrast or dissimilarity between two individuals or two states of the same individual.

⚫︎ まるで別人だね。 Translation: You're like a completely different person. ⚫︎ 彼女はまるで別人のように変わってしまった。 Translation: She has changed as if she were a different person. ⚫︎ あいつは別人になったみたいだ。 Translation: It seems like he has become a different person.

This word is used to express a significant change or difference between two people or the transformation of one person. It often highlights a contrast, emphasizing how different someone is now compared to before or compared to someone else. It's suitable for various contexts, from casual conversation to more formal discussions, depending on the sentence structure and surrounding context.

別人 ([別人]) is primarily written using kanji and hiragana. ・ Kanji: 別 (bet-su - separate, different) and 人 (jin - person). ・ Hiragana: べつじん There are no significant variations in the okurigana for this word.

⚫︎ 他人（たにん） - Other people, another person. (More general) ⚫︎ 違う人（ちがうひと） - Different person. (More literal) ⚫︎ 別人格（べつじんかく） - Another personality. (Focuses on personality change)

⚫︎ 本人（ほんにん）- The person themselves. ⚫︎ 同じ人（おなじひと） - The same person. ⚫︎ 元の人（もとのひと） - The original person.

ダイエットして、別人みたいにきれいになったね！ ・Translation: You've lost weight and you look beautiful, like a completely different person! ・Explanation: This sentence uses 別人 to describe the significant change in appearance due to the weight loss.

事故の後、彼は別人のように性格が変わってしまった。 ・Translation: After the accident, his personality changed as if he were a different person. ・Explanation: This sentence highlights the change in personality after the accident using 別人.

The word 別人 is formed from the kanji 別 (bet-su), meaning "separate" or "different," and 人 (jin), meaning "person." The combination of these kanji signifies someone who is different or separate from the person in question.