*On prend plus de mouches avec du miel qu’avec du vinaigre = More is done by kindness than by harshness.
C’est une fine mouche = He is a sly dog, a deep one.
C’est la mouche du coche = He is a regular busybody; The worst wheel makes the most noise. (See [Coche] and [Bruit].)
Faire mouche = To hit the bull’s eye.
Moudre
Il viendra moudre à notre moulin = He will be in want of us some day.
Moulin
C’est un vrai moulin à paroles = She is a regular chatterbox; He is a regular windbag.
Moutarde
Il m’a fait monter la moutarde au nez = He irritated me; He made me lose my temper.