1. hinder or prevent.   manipulate   inhibit   polarize   steep   Hint Half-n-half Clue   2. unite by intertwining.   impinge   reverberate   splice   weather   Half-n-half Clue   3. remove unwanted stuff; purify or cleanse.   purge   vent   wane   perturb   Half-n-half Clue   4. exhaust vigor of or undermine.   invert   invalidate   sap   weather   Half-n-half Clue   5. interject or insert between.   interpolate   sublimate   vent   implement   Half-n-half Clue   6. release special substance or hide away.   weather   sublimate   secrete   incubate   Half-n-half Clue   7. decrease in size or strength.   incorporate   wane   simulate   impinge   Half-n-half Clue