Mödosam, painful, tiresome, troublesome.
Mögel, mould; möglig, mouldy.
Möjlig, possible.
Möjligen, possibly.
Möjlighet, possibility.
Mönster, pattern, model.
Mönstra, to muster, to review.
Mör, tender.
Mörda, to murder, to assassinate.
Mördare, murderer, assassin.