落つ

おつ

Nidan u-verb (upper class), intransitive verb

to fall down, to drop, to fall (e.g. rain), to sink (e.g. sun or moon), to fall onto (e.g. light or one's gaze)(archaism)

to be omitted, to be missing(archaism)

to crash, to degenerate, to degrade, to fall behind(archaism)

to be removed (e.g. illness, possessing spirit, name on a list)(archaism)

to fall (into someone's hands), to become someone's possession(archaism)

to fall, to be defeated, to surrender(archaism)

落	fall, drop, come down, village, hamlet
墜	crash, fall (down)
堕	degenerate, descend to, lapse into