crepescular
It's fucking crepescular, not corpuscular. Guess you never studied Latin.
crepuscular (krĭ-pŭsˈkyə-lər)►
adj.
Of or like twilight; dim: "the period's crepuscular charm and a waning of the intense francophilia that used to shape the art market” ( Wall Street Journal).
adj.
Zoology Becoming active at twilight or before sunrise, as do bats and certain insects and birds.
crepuscular (adj.)
figurative use, "dim, indistinct," is attested from 1660s; literal use, "pertaining to or resembling twilight," from 1755, from Latin crepusculum "twilight, dusk," related to creper "obscure, uncertain," from Proto-Italic krepos "twilight," which is of uncertain origin. It is not certain whether "twilight" or "obscure" was the original sense; de Vaan writes, "there is no known root of the form krep- from which the extant meanings can be derived."
Especially of evening twilight, but 17c.-18c. also "like morning twilight" as symbolic of imperfect enlightenment. In zoology, "flying or appearing at sunset," from 1826. An older (and lovelier-sounding) adjective form was crepusculine (1540s).
Etymologyfag.