Add 's' to the 1st clue to get the answer. Bonne chance.
-1. Waiters need this to carry food. Add an S and it means to wander.
-2. Not having enough with S becomes lax or loose.
-3. A baby goat with S changes to a word which means to slide.
-4. To put on clothes with an S changes to an oath.
-5. The most common human ailment with an S changes to a rebuke.
-6. A kind of furniture to sleep on, changes with an S to the northern inhabitants of Great Britain.
-7. A hearty sound of amusement with S changes to butchery.
8. Excellent European breakfast item with S changes to pretense or counterfeit.
9. A fowl cage or basket with S becomes a kind of shovel.
-10. To possess with S, makes men smooth faced everyday.