What does 遺憾 mean?
遺憾 is a Japanese adjective meaning “regrettable; unsatisfactory; deplorable; lamentable” in English. It is written as 遺憾 in kanji, いかん in hiragana, and ikan in romaji. This word is part of JLPT N3 vocabulary.
Example sentence
それは遺憾ながら本当だ。
That, while regrettable, is true.