1. neutralize
2. neutralise, liquidate, waste, do in, kill, shave
3. reduce, cut down, cut back, trim, trim down, trim back, cut, bring down, hook
4. snitch, thieve, cop, glom, steal, dash off
5. toss off, fling off, write, compose, pen, indite, drop
5. discontinue, stop, cease, give up, quit, lay off