1. excessive   SUPERFLUOUS   SUCCINCT   SUBORDINATE   SCANTY   Hint Half-n-half Clue   2. seated   THREADBARE   SEDENTARY   TACTFUL   SOPORIFIC   Half-n-half Clue   3. gloomy   TRITE   SPORADIC   SOMBER   TANTAMOUNT   Half-n-half Clue   4. stealthy   SURREPTITIOUS   SAVORY   TACITURN   VERBOSE   Half-n-half Clue   5. changing rapidly   TANTAMOUNT   SPORADIC   VOLATILE   WARY   Half-n-half Clue   6. capricious   VIRULENT   WHIMSICAL   TURGID   UNOBTRUSIVE   Half-n-half Clue   7. muddy or cloudy   TURBID   TRITE   SUCCINCT   SUBMISSIVE   Half-n-half Clue