1. increase in size or strength.   simulate   pulverize   wax   initiate   Hint Half-n-half Clue   2. make invalid or weaken.   initiate   postulate   quarantine   invalidate   Half-n-half Clue   3. harden into bone or become rigid.   ossify   implement   reverberate   invert   Half-n-half Clue   4. convert by heat to vapor and then solidify; purify.   superimpose   sublimate   truncate   initiate   Half-n-half Clue   5. echo or reflect sound, light or heat.   weather   infer   inhibit   reverberate   Half-n-half Clue   6. hasten or throw headlong down.   precipitate   initiate   perforate   invert   Half-n-half Clue   7. disturb or agitate.   impinge   perturb   purge   invalidate   Half-n-half Clue