1) no, not lest
Part of Speech: particle
A primary particle of qualified negation (whereas G3756 expresses an absolute denial); (adverbially) not, (conjugationally) lest; also (as interrogitive implying a negative answer [whereas G3756 expects an affirmative one]); whether: - any, but, (that), X forbear, + God forbid, + lack, lest, neither, never, no (X wise in), none, nor, [can-] not, nothing, that not, un [-taken], without. Often used in compounds in substantially the same relations. See also G3362, G3363, G3364, G3372, G3373, G3375, G3378.
|b marker of a question||69.15|
|c so that not||89.62|
|(μή πως) so that not||89.62|
|(εἰ μή) except that||89.131|
These two sites give similar information, with the definition from several dictionaries and statistics on the use of the word.
Perseus Digital Library
University of Chicago's Logion lexicon
Thayer's dictionary plus other information.
From this site's dictionary (in Italian)
Click on the first column to search for that word as a form of the root μή; click on the second column to search for that grammatical form of the root μή; click on the third column to search for that word and grammatical form; click on the total to search for the root μή.