1. ebullient   impenetrable or unpassable.   boiling or enthusiastic.   having common center.   having human form or personality.   Hint Half-n-half Clue   2. amorphous   having indigestion.   shapeless or lacking definition.   flesh-eating.   of motive force or energetic.   Half-n-half Clue   3. elliptical   dangerous or risky.   inferred by reasoning; derived as conclusions.   shaped like an oval; ambiguous or baffling.   grinding down or rubbing off.   Half-n-half Clue   4. centrifugal   next to or adjoining.   flying or radiating from a center.   fragrant or sweet-smelling.   based on experiment, not theory.   Half-n-half Clue   5. dyspeptic   of same kind or uniform.   that corrodes or burns; biting or sarcastic.   having indigestion.   breakable or fragile.   Half-n-half Clue   6. concentric   heat-liberating.   imbalanced or not similar about dividing line.   having common center.   based on hypotheses or assumptions.   Half-n-half Clue   7. horticultural   capable of being drawn into wire or flexible.   pertaining to the art of gardening.   not conventional.   herb-eating or vegetarian.   Half-n-half Clue