[Bezuslovno]
"certainly, undoubtedly" is Безусловно in Russian.
Безусловно means "certainly, undoubtedly" in English.
Listen to the pronunciationWord #2748 of 6,000 by frequency in Russian.
Он безусловно самый талантливый ученик в классе.
He is undoubtedly the most talented student in the class.