What does 実在 mean?
実在 is a Japanese noun meaning “actual existence; real existence; existing in real life” in English. It is written as 実在 in kanji, じつざい in hiragana, and jitsuzai in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
サンタクロースが実在しないなんて信じない。
I don't believe that Santa Claus is imaginary.