Origin of liss
From Middle English lis, lisse, lysse, from Old English liss, līs, līþs (“grace, favor, love, kindness, mercy, joy, peace, rest, remission, forgiveness, alleviation, salvation”), from Proto-Germanic *linþesjō, *lenþesjō (“rest”), from Proto-Indo-European *lent- (“bendsome, resilient”). Cognate with Danish lise (“solace, relief”), Swedish lisa (“solace, relief”). Related to Old English līþe (“lithe, soft, gentle, meek, mild, serene, benign, gracious, pleasant, sweet”). See lithe.