寐び語ごMeanings1nounsleep-talking; nonsenseRare literary or archaic term for sleep-talking; the common modern word is 寝言 (ねごと). The 'nonsense' gloss reflects the figurative use of 寝言 for absurd or incoherent talk.See also: 寝言 (ねごと)古ふるい文ぶん献けんに「寐び語ご」という表ひょう記きが見みられる。The notation '寐語' can be found in old documents.彼かれの言いっていることはまるで寐び語ごだ。What he's saying is just nonsense.