1. per as in perennial   backward   against   meet, with, together   through, complete   Hint Half-n-half Clue   2. intra as in intravenous   chief, main, first   through, complete   within   with, together   Half-n-half Clue   3. syn as in synthesis   chief, main, first   meet, with, together   backward   with, together   Half-n-half Clue   4. neo as in neophyte   backward   above, over   new   far, distant   Half-n-half Clue   5. ob as in obloquy   far, distant   against   within   through, complete   Half-n-half Clue   6. con as in concomitant   back, again   after   against   meet, with, together   Half-n-half Clue   7. in as in inchoate   new   far, distant   not   within   Half-n-half Clue