幽 - seclude, confine to a room, deep

ghost; specter; spectre; apparition; phantom

confinement; imprisonment; incarceration

ghost; apparition; spirit

fragrance

rumination; ruminating; careful pondering

Chiroteuthis imperator (species of squid)

gloom; darkness; seclusion

modest and beautiful; profound and elegant

mysterious profundity; quiet beauty; the subtle and profound; yūgen

imprisonment

solitude; quiet

dark window; secluded dwelling