Sordid (adjective) بدعنوان، برا، خراب

involving immoral or dishonourable actions and motives; arousing moral distaste and contempt.
Example: “the story paints a sordid picture of bribes and scams”
Dogged (adjective) اڑیل، پکا، ضدی

having or showing tenacity and grim persistence.
Example: “success required dogged determination”