What does the phrase "for good" mean in the following sentence?
He packed his bags and left the country for good.

• He packed his bags and left the country for good.
→ Here, "for good" means - Permanently.

• For good 
English Meaning: forever/definitively. 
Bangla Meaning: চিরতরে / স্থায়ীভাবে।

Example Sentence: Nabid is leaving Bangladesh for good. 
Bangla Meaning: নাবিদ স্থায়ীভাবে বাংলাদেশ ছেড়ে চলে যাচ্ছে। 

Source: Website Lecture.