root for (someone)

Translations
болеть за (кого-то)
I always root for my sister during their soccer matches.
Я всегда болею за свою сестру во время ее футбольных матчей.
Definitions
To support, encourage, or cheer for someone, especially in a competition or challenging situation.
Words
root

verb
болеть
for

preposition
за
someone

pronoun
кто-то