本当

(1)a statement or assertion of verified information about something that is the case or has happened; "he supported his argument with an impressive array of facts"

(2)その実際の出来事または起きたことであることについての確認された情報の発表または主張

(3)a true statement; "he told the truth"; "he thought of answering with the truth but he knew they wouldn't believe it"

(4)本当の話

(5)any rational or irrational number

(6)有理数と無理数