1. among, between   inter as in intervene   mono as in monotheism   abs as in abscond   mega as in megalith   Hint Half-n-half Clue   2. without   an as in anarchic   contra as in contravene   mono as in monotheism   mega as in megalith   Half-n-half Clue   3. down   cata as in cataclysm   pre as in preamble   bi as in bipartite   ultra as in ultrasonic   Half-n-half Clue   4. two, twice   meta as in metamorphosis   contra as in contravene   intro as in introspect   bi as in bipartite   Half-n-half Clue   5. within   ultra as in ultrasonic   mega as in megalith   non as in nonentity   intro as in introspect   Half-n-half Clue   6. first   an as in anarchic   cata as in cataclysm   proto as in prototype   under as in undercurrent   Half-n-half Clue   7. many, several   cata as in cataclysm   abs as in abscond   poly as in polyglot   non as in nonentity   Half-n-half Clue