Where does “июн” come from?

июн (Tajik) comes from Russian ию́нь, from Latin iūnius, from Latin -ius, from Proto-Italic -jōs, from Proto-Indo-European -yós — Creates adjectives from noun or verb stems.

июн (Tajik): June

Definitions

June

Ancestry of “июн”, step by step

Step	Language	Word	Meaning
1	Russian	ию́нь	June
2	Latin	iūnius	Of the Junian gens
3	Latin	-ius	forming adjectives from nouns; nominative neuter...
4	Proto-Italic	-jōs	Forms comparative adjectives
5	Proto-Indo-European	-yós	Creates adjectives from noun or verb stems

Every word from Proto-Indo-European -yós →Every word from Latin -ius →Every word from Proto-Italic -jōs →