From Proto-Indo-European *h₂erǵ-i-s (“white”). <span class="searchmatch">𒄯𒆠𒅖</span> • (ḫar-ki-iš) white, bright...
*h₂erǵ-. Thus cognate with Ancient Greek ἄργυρος (árguros) and Hittite <span class="searchmatch">𒄯𒆠𒅖</span> (ḫarkiš, “bright, white”). If so, compare English declare (literally “to...