1. overused   WHIMSICAL   UNPRECEDENTED   TRITE   TENACIOUS   Hint Half-n-half Clue   2. seated   SEDENTARY   STAGNANT   TRIFLING   VOLATILE   Half-n-half Clue   3. not done before   UNPRECEDENTED   TRIFLING   UNOBTRUSIVE   THREADBARE   Half-n-half Clue   4. conscientious   SERVILE   SCRUPULOUS   SCANTY   VIABLE   Half-n-half Clue   5. submissive   VOLATILE   TRIFLING   SERVILE   SCRUPULOUS   Half-n-half Clue   6. cautious   VIRULENT   WARY   SOPORIFIC   TENACIOUS   Half-n-half Clue   7. saying very little   SCANTY   STOIC   SUPERFLUOUS   TACITURN   Half-n-half Clue