지 아니하다

not, in the old full form

This is the uncontracted ancestor of the everyday negative 지 않다, and it sounds formal or archaic. In these lines it appears exactly where you would expect that: scripture, a legal clause about not filming or publishing without permission, dictionary-style definitions of a feeling that will not settle, a proverb about not knowing people until you have suffered. One line is the stock jocular question meaning is that not lovely, which is quoted for its old-fashioned ring. Nobody talks this way in ordinary conversation.

Register: formal or archaic; scripture, law, set phrases