1. VOLATILE   occurring irregularly   stealthy   changing rapidly   gloomy   Hint Half-n-half Clue   2. SUCCINCT   shallow   workable   terse   causing sleep   Half-n-half Clue   3. SUPERFICIAL   shallow   trivial   terse   slow-moving   Half-n-half Clue   4. TACITURN   saying very little   of lesser rank   seated   appetizing   Half-n-half Clue   5. TRITE   unswerving   overused   talkative and fluent   unjustified   Half-n-half Clue   6. VIRULENT   bitterly hostile   conscientious   inconspicuous   submissive   Half-n-half Clue   7. SUSCEPTIBLE   stolid   changing rapidly   easily affected   saying very little   Half-n-half Clue