Senses
不着/ 不著 no need
To have no need; need not. Often used in the context of it being unnecessary to do something.
不着/ 不著 unsuccessful
(literary) To be unsuccessful; to fail in an attempt, such as failing to find a contact or failing to achieve a desired outcome.
不着/ 不著 delayed
(literary) To be late or untimely, such as failing to greet a guest on time.
不着/ 不著 to not be at
(literary) To not be present at a location; to stay away from a place like one's home or a grave
不着/ 不著 to neglect
(literary) To neglect or ignore, particularly regarding one's responsibilities or family business
不着/ 不著 unfortunate
(literary) To be unfortunate or ill-fated, especially in the context of marriage or livelihood