also: ひめもす
Poetic or literary adverb meaning 'from morning till night'. In modern Japanese, 一日中 (いちにちじゅう) is the everyday equivalent.
All day long, gently, gently. (classic haiku by Yosa Buson)
ひねもす読書にふけった。
I spent the whole day absorbed in reading.
Usually written in kana; the kanji form 終日 is a gikun/jukujikun reading and is rare.
Gikun/jukujikun reading; this kanji form is normally read しゅうじつ. Use only in poetic or literary contexts.
Obsolete kana variant; not used in modern Japanese.
Developed from the older form ひめもす; its deeper origin remains uncertain.