1. muddy or not clear.   turbid   synthetic   stratified   precipitate   Hint Half-n-half Clue   2. dissolvable (in solvent) or solvable (of problem).   serrated   resilient   soluble   mnemonic   Half-n-half Clue   3. of many forms.   multiform   vitriolic   luminous   stagnant   Half-n-half Clue   4. pertaining to earthquakes.   tautological   metallurgical   seismic   pungent   Half-n-half Clue   5. penetrable or allowing fluids to pass through.   permeable   synchronous   saccharine   visceral   Half-n-half Clue   6. related to a diagram or outline.   schematic   serrated   saccharine   ligneous   Half-n-half Clue   7. pertaining to the body or physical.   somatic   serrated   thermal   porous   Half-n-half Clue