たそがる

  1. Nidan verb (lower class) with 'ru' ending (archaic), intransitive verb

    to get dark after sunset, to turn to dusk, to fade into twilight
    archaic

  2. Nidan verb (lower class) with 'ru' ending (archaic), intransitive verb

    to decline (after a peak), to wane, to lose vigour
    archaic