ναί (cp. Lat. nae) asseverative (truly, yea), with the accusative in oaths where it is usually followed by μά (1596 b). ναί yes, in answers, is found only in Attic.
νή (cp. Lat. neē) asseverative (truly, yea), with the accusative in oaths, and only in an affirmative sense. νή is found only in Attic. See 1596 b.