朽 - decay, rot, remain in seclusion

infirmity (due to old age); decrepitude; senility; senescence; superannuation

everlasting; immortal; eternal; enduring; undying; imperishable

once bitten twice shy; to become over cautious from a bad experience; to be bitten by a snake and thus fear a rotten rope (which resembles a snake)

dry rot

decay; dilapidation

to rot away; to crumble to dust; to decay completely; to fall to ruins; to rust away

timeless masterpiece; immortal work

one's fame or achievements being passed down eternally

reddish-yellow (colour); russet

being young yet unambitious; being young but lacking spirit

decay; deterioration; rot

decayed leaves