 In fact, the 17th century Buddhist priest and scholar Keichū wrote that "if one says "jokotoba", one speaks of long "makurakotoba"" (序(詞)ト云モ枕詞ノ長キヲ云ヘリ) in his "Man'yō-taishōki".Japanese scholar Shinobu Orikuchi also echoes this statement, claiming that "makurakotoba" are "jokotoba" that have been compressed.While some makurakotoba still have meanings that add to the meaning of the following word, many others have lost their meanings.