What does 愛人 mean?
愛人 is a Japanese noun meaning “lover; mistress” in English. It is written as 愛人 in kanji, あいじん in hiragana, and aijin in romaji. This word is part of JLPT N2 vocabulary.
Example sentence
ここだけの話だが、彼には愛人がいる。
Between ourselves, he keeps a mistress.