1. down   micro as in microcosm   proto as in prototype   cata as in cataclysm   pre as in preamble   Hint Half-n-half Clue   2. hatred   mis as in misanthrope   an as in anarchic   under as in undercurrent   pre as in preamble   Half-n-half Clue   3. within   co as in coalesce   bi as in bipartite   non as in nonentity   intro as in introspect   Half-n-half Clue   4. one, single   mono as in monotheism   inter as in intervene   non as in nonentity   circum as in circumspection   Half-n-half Clue   5. two, twice   inter as in intervene   bi as in bipartite   cata as in cataclysm   under as in undercurrent   Half-n-half Clue   6. involving change   mis as in misanthrope   meta as in metamorphosis   pre as in preamble   non as in nonentity   Half-n-half Clue   7. great, large, one million   co as in coalesce   mega as in megalith   under as in undercurrent   ultra as in ultrasonic   Half-n-half Clue