Must

"Must" in Russian

муст

must

(fruit juice that will ferment or has fermented, usually from grapes)

до́лжен

dólžen

(be required to)

должна́

dolžná

(be required to)

должно́

dolžnó

(be required to)

должно́ быть

dolžnó bytʹ

(said about something that is very likely, probable, or certain to be true)

должны́

dolžný

(be required to)

наве́рное

navérnoje

(said about something that is very likely, probable, or certain to be true)

Data sourced from Wiktionary, WordNet, CMU, and other open linguistic databases. Updated March 2026.