From Proto-Germanic *swalīkaz. Cognate with Old Frisian selik, Old Saxon sulik, Old Dutch sulik, Old High German sulīh, Old Norse slíkr, Gothic 𐍃𐍅𐌰𐌻𐌴𐌹𐌺𐍃 (swaleiks). Equivalent to swā + -līċ.
swelċ