-օղ

Etymology
The original spelling is, from , a thematic form of the suffix, with a preceding *-ā or *-ə. Compare from Proto-Indo-European. Cognate with 🇨🇬.

The spelling is either an early monophthongized version of  or has another origin, perhaps, ; compare the ending of Ancient Greek ,.

The endings of, , may be different from this suffix; they may be of  origin.

Usage notes
Armenian grammarians assign to this a function of a participial suffix. But Old Armenian forms in are not participles and they do not belong to the conjugation. Old Armenian had only one true participle, formed with. In modern Armenian, indeed, forms participles.