From Wiktionary, the free dictionary
bes-
- great-
- before; used to form words meaning "two times"
bes- (Cyrillic spelling бес-)
- Alternative form of bez-; used before voiceless consonants
- un-, dis-
- -less, prefix prepended to adjectives to create an adjective denoting a deprivation of a feature
- -free
- bez- - before vowel or voiced consonant
- bez