1. In a way that lacks cleanliness; in a dirty, filthy, or unhygienic manner
The food was prepared in an unclean manner, violating health codes.
O alimento foi preparado de forma imunda, violando as normas de higiene.
2. In a morally or spiritually impure way
He conducted himself in an unclean manner, disregarding ethical principles.
Ele se comportou de maneira imunda, ignorando princípios éticos.