1. DASTARD   legitimate   coward   hero   sinner   illegitimate   Hint Half-n-half Clue   2. DECREPIT   ruined   old   youthful   cynical   unexpected   Half-n-half Clue   3. JEOPARDY   safety   steady   liberty   tardy   bravery   Half-n-half Clue   4. OMNIPOTENT   nebulous   dispassionate   poisonous   powerful   weak   Half-n-half Clue   5. OPIATE   distinctive   despair   stimulant   tempestuous   distress   Half-n-half Clue   6. OPPORTUNIST   adversary   man of principles   philanthropist   quisling   accomplice   Half-n-half Clue   7. OBSTREPEROUS   turbulent   osteoporosis   noisy   porous   silent   Half-n-half Clue