klicati

1. to cheer; to shout with joy
   Ljudi su na ulicama klicali od sreće. — People in the streets were cheering with joy.
   Masa je klicala: „Živela sloboda!“ — The crowd was chanting, "Long live freedom!"
2. (+ dat.) to cheer someone on; to hail
   Navijači su klicali svojim igračima do kraja utakmice. — The fans cheered their players on until the end of the match.

The person being cheered is in the dative: klicati pobedniku.