to toe the line, to behave properly
Depois que meu marido me perdoou a traição, preciso andar na linha.
After my husband forgave me for cheating, I need to walk the line.
The image of staying in a straight line suggests following rules. Dictionaries record andar na linha as behaving properly or as expected; the image alone does not establish a military origin.
Source: Michaelis.
Create your account to continue with this topic in Falando.
Free account. A1 lessons included.