From Middle English liȝt, lyghte, from Old English lēht, lēoht, līht, from Proto-West Germanic *lį̄ht, from Proto-Germanic *linhtaz or *līhtaz (“light (in weight)”), from Proto-Indo-European *h₁lengʷʰ- (“lightweight”). Cognates Cognate with Dutch licht (“light (not heavy)”), German leicht (“light (not heavy)”), Luxembourgish liicht (“lightweight”), Vilamovian łajcht (“easy”), Yiddish לײַכט (laykht, “light (of low weight)”), Danish let (“light (not heavy)”), Faroese lættur (“light (of weight); easy (to do)”), Icelandic léttur (“light (not weighing much); easy”), Norwegian Bokmål and Norwegian Nynorsk lett (“light (not heavy); easy”), Swedish lätt (“light; of low weight”), Gothic 𐌻𐌴𐌹𐌷𐍄𐍃 (leihts, “light (in weight)”); also Irish léim (“jump, leap; obstacle to be jumped; chasm, promontory”), Scottish Gaelic leum, lèim (“bound, frisk, leap; jump”), Welsh llai (“smaller; fewer, less”), Latin levis (“light (not heavy)”), Greek ελαφρός (elafrós, “lightweight; slight, thin, weak”), Albanian lehtë (“lightweight; easy”), Lithuanian lengvas (“light (not heavy); easy”), Belarusian лёгкі (ljóhki, “light (not heavy); easy”), Bulgarian and Macedonian лек (lek, “light (not heavy)”), Czech lehký (“light (of low weight); easy”), Polish lekki, lętki (“light (having little physical weight); easy (not demanding much effort; not difficult)”), Russian лёгкий (ljóxkij, “lightweight; easy”), Serbo-Croatian ла̏к, ла̏ган, lȁk, lȁgan (“easy; light (not heavy)”), Slovak ľahký (“light (of low weight); easy”), Slovene lahek (“light (of low weight); easy”), Ukrainian легки́й (lehkýj, “lightweight”), Armenian լանջ (lanǰ), լանջք (lanǰkʻ, “breast; mountain slope”), Persian لاغر (lâġar, “lithe; skinny; slender; thin”), Tocharian B lankᵤtse (“light (not heavy)”), Sanskrit लघु (laghu), रघु (raghu, “easy, light, not heavy or difficult”).

aflame • alight • belight • beshine • bright • catch fire • catch on fire • chance upon • clear • combust • come upon • conflagrate • daylight • delicate • enkindle • enlighten • find • fire • fire up • gentle • go up in flames • go up in smoke • happen upon • hit upon • ignite • illume • illuminate • illumine • illustrate • inconsequential • inflame • irradiate • kindle • lamp • land • light of day • light up • lighten • lightful • lightweight • lite • lo-cal • low-alcohol • luster • mild • moderate • slight • sparse