1. workable   TRIFLING   SLUGGISH   STOIC   VIABLE   Hint Half-n-half Clue   2. stealthy   SATIRICAL   SCRUPULOUS   STRIDENT   SURREPTITIOUS   Half-n-half Clue   3. not done before   UNPRECEDENTED   THREADBARE   SERVILE   WARY   Half-n-half Clue   4. diplomatic   SCRUPULOUS   TACTFUL   TENTATIVE   THREADBARE   Half-n-half Clue   5. equivalent   TANTAMOUNT   SOMBER   WARY   WHIMSICAL   Half-n-half Clue   6. holding fast   SUCCINCT   VERBOSE   TENACIOUS   TRIFLING   Half-n-half Clue   7. wordy   TACTFUL   VERBOSE   VIRULENT   SUPERFLUOUS   Half-n-half Clue