1. obstruct   IMPUTE   HAMPER   FALTER   FACILITATE   Hint Half-n-half Clue   2. stay for long time   LINGER   INTIMIDATE   IMPLEMENT   HEED   Half-n-half Clue   3. lose vitality   HEED   LAMPOON   LANGUISH   INTIMIDATE   Half-n-half Clue   4. understand   LANGUISH   FATHOM   INTERVENE   INSTIGATE   Half-n-half Clue   5. ridicule   LAMPOON   FATHOM   INVERT   INDICT   Half-n-half Clue   6. deny   GAINSAY   INCITE   FALTER   INDUCE   Half-n-half Clue   7. satisfy   GAINSAY   INDUCE   IMPAIR   GRATIFY   Half-n-half Clue