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Re: Difference between δεν and μην?
by Nick Savchenko - Wednesday, 7 December 2016, 06:50 AM

“μην” and “μη” are used with subjunctive and imperative moods, while “δεν” and “δε” are used with indicative mood.

The final ν doesn't affect the meaning, it's dropped when the phrase sounds better without it.