1. UNRULY   certain   straight   obedient   erect   inquisitive   Hint Hint       2. SCURRILOUS   steady   voracious   decent   serene   septic   Hint       3. TRACTABLE   impossible   barren   infertile   uncontrollable   artificial   Hint       4. TUMULT   slowness   din   slimness   serenity   rarity   Hint       5. SENILITY   emptiness   fallacy   veracity   youthfulness   memorability   Hint       6. RECONDITE   semi-empirical   readily comprehensible   sociable   presumptuous   excessively wordy   Hint       7. TREPIDATION   intrepidity   hostility   torpor   shyness   memorability   Hint