枯

dried up

surname Gu

ancient / old / paleo-

(bound form) tree / (bound form) wood / unresponsive; numb; wooden

dry and dull / uninteresting / dry-as-dust

to wilt / to wither / wilted / withered / drained / enervated / exhausted

used up / dried up / exhausted (of resources)

withered / dried up

lit. when the seas run dry and the stones go soft (idiom) / fig. forever / until the end of time

withered

dead leaf / withered leaf

withered / haggard / languid / without energy

to rack one's brains (for apt wording etc) (idiom)

dull and lonely

Bakuninism, a 19th century socialist theory

dried bones in burial mound (idiom); dead and buried

Agent Orange (herbicide)

dead tree

withered and rotten