1. related to a diagram or outline.   saccharine   potable   schematic   quiescent   Hint Half-n-half Clue   2. not transparent or with no light transmission.   metallurgical   permeable   opaque   vitriolic   Half-n-half Clue   3. slanting or indirect.   redundant   oblique   pulmonary   metallurgical   Half-n-half Clue   4. pertaining to memory or memory-aid.   iridescent   mnemonic   thermal   rarefied   Half-n-half Clue   5. between one and two right angles; blunt or dull.   redundant   obtuse   repellent   rarefied   Half-n-half Clue   6. stubborn or rebellious.   obtuse   ventral   refractory   soluble   Half-n-half Clue   7. with only one color.   prehensile   monochromatic   nocturnal   metallurgical   Half-n-half Clue