1. mono as in monotheism   one, single   away from   excessive, beyond   within   Hint Half-n-half Clue   2. mega as in megalith   great, large, one million   first   without   away from   Half-n-half Clue   3. pre as in preamble   against   many, several   before   hatred   Half-n-half Clue   4. inter as in intervene   involving change   among, between   down   excessive, beyond   Half-n-half Clue   5. abs as in abscond   away from   down   around   involving change   Half-n-half Clue   6. proto as in prototype   before   first   around   away from   Half-n-half Clue   7. cata as in cataclysm   down   against   one, single   with, joint   Half-n-half Clue