argue (someone's) corner

Translations
защищать (чью-то) точку зрения
She always argues her friend's corner in every debate.
Она всегда защищает точку зрения своей подруги в каждом споре.
Definitions
To defend or support someone's position, opinion, or interests in a discussion or argument, often when others disagree or when that person is not present to defend themselves.
Words
argue

verb
защищать
someone

pronoun
кого-то
s
принадлежность
corner

noun
позиция