The answer to the first clue in each pair is a word with the letter D somewhere in it. Remove the D phonetically and you'll have the answer to the second clue.
-1. Huge rock/ kind of hat
-2. Animal with spots/ person in a colony
-3. Long time without rain/ severe defeat
-4. Wrote on an envelope to be mailed/ item on a police blotter
-5. King Midas, for example/ scary film genre
-6. Colonel in the game Clue/ something we all hope to pass
-7. Ornaments on a necklace/ self-punishment for wrongdoing
-8. Distance from side to side/ inhalation
-9. Tonto, to the Lone Ranger/ person with ESP
-10. Person who's afraid/ what a person who's afraid does
-11. President Eisenhower/ color of snow
-12. Sweets/ careful & shrewd