1. base framework of automobile or carriage.   chassis   gyroscope   anodyne   homeostasis   Hint Half-n-half Clue   2. point in orbit farthest from earth or climax.   conjecture   effluvium   arboretum   apogee   Half-n-half Clue   3. reduction in size.   cipher   fissure   effervescence   diminution   Half-n-half Clue   4. exhalation affecting smell.   die   delta   effluvium   fauna   Half-n-half Clue   5. substance producing condition of no sensation.   anesthetic   converse   delta   apogee   Half-n-half Clue   6. tree bearing fruit-cones.   chameleon   awl   alchemy   conifer   Half-n-half Clue   7. formal discourse or essay.   efficacy   chassis   dissertation   conjecture   Half-n-half Clue