You can get each answer by using either "pro" or "con" as a prefix to the word in the clue. Ex: "For each" would lead you to "proper."
-1. Against an outlet for air, liquid, or other fluids.
-2, For a unit of mass, about twenty-eight to the ounce.
-3. Against the largest Greek island.
-4. For the state of moving, traveling, or otherwise being underway.
-5. For a verb meaning to exist.
6. For eyesight. pro-i---n
-7. For a farm vehicle used to haul heavy things.
-8. Against a stanza of poetry.
-9. Against a building for horses.
-10. Against a school examination.