Etymology
1. From Middle English nighte, night, nyght, niȝt, naht, from Old English niht, from Proto-West Germanic *naht (“night”), from Proto-Germanic *nahts (“night”), from Proto-Indo-European *nókʷts (“night”).
2. Cognates
3. Cognate with Scots nicht (“night”), Yola neeght, nieght, nyeght (“night”), North Frisian naacht, Nacht, noach, nåcht (“night”), Saterland Frisian Noacht (“night”), West Frisian nacht (“night”), Cimbrian and Dutch nacht (“night”), German and Low German Nacht (“night”), Luxembourgish Nuecht (“night”), Mòcheno nòcht (“night”), Vilamovian naocht (“night”), Yiddish נאַכט (nakht, “night”), Danish nat (“night”), Faroese nátt (“night”), Icelandic nátt, nótt (“night”), Norwegian Bokmål, Norwegian Nynorsk, and Swedish natt (“night”), Scanian nøtt (“night”), Gothic 𐌽𐌰𐌷𐍄𐍃 (nahts, “night”); also Breton noz (“night”), Cornish and Welsh nos (“night”), Irish anocht (“tonight”), Manx noght (“tonight”), Scottish Gaelic a-nochd, an nochd (“tonight”), Latin nox (“night”) (whence English nox, a doublet), Greek νύχτα (nýchta, “night”), Albanian natë (“night”), Latgalian and Latvian nakts (“night”), Lithuanian naktis (“night”), Belarusian ноч (noč, “night”), Bulgarian нощ (nošt, “night”), Czech, Polish, and Slovak noc (“night”), Macedonian ноќ (noḱ, “night”), Russian ночь (nočʹ, “night”), Serbo-Croatian ноћ, noć (“night”), Slovene noč (“night”), Ukrainian ніч (nič, “night”), Tocharian A nakcu (“last night; at night”), Tocharian B nekcīye (“last night; at night”), Hittite 𒉈𒆪𒊻 (nekuz, “evening, nightfall; dawn, twilight”), Sanskrit नक्त् (nákt). See: Scots '
nicht'.