1. cerebral   pertaining to the brain.   improving race by selective breeding.   sharply pungent.   distinct or unconnected.   Hint Half-n-half Clue   2. diffuse   next to or adjoining.   of the day or daily.   impervious or unpassable.   spread around like a gas; verbose.   Half-n-half Clue   3. chronic   shaped like an oval; ambiguous or baffling.   tending to a center.   confirmed or recurring as a disease.   cancer-causing.   Half-n-half Clue   4. cognitive   pertaining to mental processes or knowing.   glowing with heat.   grinding down or rubbing off.   practicable or possible.   Half-n-half Clue   5. abstract   shaped like an oval; ambiguous or baffling.   next to or adjoining.   spread around like a gas; verbose.   theoretical and not concrete.   Half-n-half Clue   6. embryonic   concerned with nutrition.   characteristic of a genus; not specific.   flying or radiating from a center.   related to embryo or undeveloped.   Half-n-half Clue   7. ductile   having cilia or minute hairs.   necessary for the whole; complete, not fractional.   inferred by reasoning; derived as conclusions.   capable of being drawn into wire or flexible.   Half-n-half Clue