-ավուն

Etymology
The origin is. Confined to Eastern dialects, with the earliest attestation in the 17th century. Ačaṙyan remarks that derivation from (of Iranian origin) is impossible, because no  →  sound change is known in the dialects. But perhaps that change occurred within an language, where such a change is known, and thence was borrowed into Armenian.

Compare also 🇨🇬, forming adjectives from nouns.

Suffix

 * 1)  somewhat, -ish
 * 1)  somewhat, -ish
 * 1)  somewhat, -ish

Usage notes
Especially common with color names.