Dictionary entry

μήτιγε

G. Abbott-Smith's A Manual Greek Lexicon of the New Testament

μή-τι-γε

(μήτι γε, Rec., L; μή τι γε, Tr.), >strengthened form of μήτι,

let alone: i.e. according to context;

(a) much less;

(b) much more: I Co 6:3.†