1. among, between   mega as in megalith   an as in anarchic   inter as in intervene   pre as in preamble   Hint Half-n-half Clue   2. great, large, one million   under as in undercurrent   mega as in megalith   micro as in microcosm   bi as in bipartite   Half-n-half Clue   3. involving change   circum as in circumspection   meta as in metamorphosis   mis as in misanthrope   proto as in prototype   Half-n-half Clue   4. minute, small   micro as in microcosm   bi as in bipartite   mega as in megalith   an as in anarchic   Half-n-half Clue   5. not   proto as in prototype   intro as in introspect   non as in nonentity   contra as in contravene   Half-n-half Clue   6. with, joint   co as in coalesce   under as in undercurrent   poly as in polyglot   ultra as in ultrasonic   Half-n-half Clue   7. against   ultra as in ultrasonic   contra as in contravene   poly as in polyglot   bi as in bipartite   Half-n-half Clue