take rug out from under

defame degrade destroy disgrace disparage disprove ruin slander smear vilify

censure disesteem disfavor dishonor explode expose pooh-pooh puncture reproach shoot slur

blow up bring into disrepute bring to naught disconsider frown upon knock bottom out of mudsling poke full of holes put down reflect on run down show up tear down

approve build commend compliment construct exalt flatter honor laud praise upgrade

believe credit trust