1) Con, across the Pyrenees 2) French conjunction 3) French menu word 4) French preposition 5) Gallic with 6) Lady Marmalade preposition 7) Le menu word 8) Nice with 9) Not sans 10) Opposited of sans 11) Paris preposition 12) Parisian preposition 13) Pas sans 14) Poitiers preposition 15) Preposition for Pierre Found on https://www.crosswordclues.com/clue/avec