1. release special substance or hide away.   secrete   masticate   superimpose   perforate   Hint Half-n-half Clue   2. burst inwards.   implode   pulverize   incorporate   wane   Half-n-half Clue   3. produce or deposit (eggs).   spawn   incorporate   perturb   infer   Half-n-half Clue   4. model, feign or pretend.   quarantine   simulate   validate   propagate   Half-n-half Clue   5. melt ores for extraction of metal.   ossify   smelt   precipitate   invalidate   Half-n-half Clue   6. split into two opposite groups.   impinge   incorporate   simulate   polarize   Half-n-half Clue   7. divide into parts.   oscillate   partition   spawn   smolder   Half-n-half Clue