1. rearguard   UNTENABLE   UNWITTING   VANGUARD   SECULAR   Hint Hint       2. intrepidity   TYRO   TRUCULENT   TREPIDATION   UNEARTH   Hint       3. decent   SECULAR   SCURRILOUS   RECONDITE   TURPITUDE   Hint       4. extol   UNEARTH   VILIFY   SEDENTARY   VACILLATION   Hint       5. active   INDOLENT   VERITY   UNGAINLY   SEDENTARY   Hint       6. peaceful   VENAL   TRUCULENT   UNKEMPT   VAUNTED   Hint       7. unpardonable   INDOLENT   SENTENTIOUS   UNRULY   VENIAL   Hint