1. many, several   poly as in polyglot   non as in nonentity   under as in undercurrent   proto as in prototype   Hint Half-n-half Clue   2. one, single   pre as in preamble   mono as in monotheism   cata as in cataclysm   mis as in misanthrope   Half-n-half Clue   3. with, joint   cata as in cataclysm   under as in undercurrent   poly as in polyglot   co as in coalesce   Half-n-half Clue   4. great, large, one million   co as in coalesce   circum as in circumspection   mega as in megalith   poly as in polyglot   Half-n-half Clue   5. within   mono as in monotheism   micro as in microcosm   intro as in introspect   circum as in circumspection   Half-n-half Clue   6. involving change   mega as in megalith   meta as in metamorphosis   abs as in abscond   mis as in misanthrope   Half-n-half Clue   7. against   poly as in polyglot   co as in coalesce   intro as in introspect   contra as in contravene   Half-n-half Clue