agree to differ agree to disagree ban be at variance be in dissent beg to differ blackball carp catch at straws categorically reject cavil cut up differ disagree disagree with disallow disapprove disapprove of discord with disfavor dissent dissent from divide on drop out exclude fault-find find fault frown at frown down frown upon grimace at look askance at look black upon nitpick not agree not approve not go for not hear of not hold with object object to oppose ostracize pettifog pick holes pick to pieces protest pull apart pull to pieces quibble reject say no to secede take exception to take issue tear apart tear to pieces think ill of think little of thumb down view with disfavor withdraw withhold assent