1. dia as in diagonally   across   excessively   many   opposite, against   Hint Half-n-half Clue   2. ab as in aberration   away from   across   excessively   with, together   Half-n-half Clue   3. anti as in antidote   excessively   outside, beyond   opposite, against   with, together   Half-n-half Clue   4. dis as in disparate   both   away from   not   half, partly   Half-n-half Clue   5. ante as in antedate   both   opposite, against   prior to, before   many   Half-n-half Clue   6. pro as in propitiate   opposite, against   down   in favour of, forward   bad, faulty   Half-n-half Clue   7. dys as in dystrophy   away from   half, partly   bad, faulty   outside, beyond   Half-n-half Clue