Latin word neque comes from Latin -que, Latin nam (Actually. Because. For. Thus.)

Detailed word origin of neque

Dictionary entry	Language	Definition
-que	Latin (lat)	(rare) used in an answer. (when repeated) "both... and", "whether... or". And, a copulative particle affixed to the word it annexes. Introducing an explanatory clause.
nam	Latin (lat)	Actually. Because. For. Thus.
neque	Latin (lat)	And not, also not. Neither ... nor.

Words with the same origin as neque