Yet while Ladd offers an effective rebuttal to the nostalgia buffs, his insistence that everything is fine is little different from the argument that everything is worse.

This Saudi holy warrior would want to prove that he is an effective rebuttal to American power.

Mr. Kerry also said that his Vietnam buddies were an effective rebuttal.

On July 10 President François Mitterrand issued an effective rebuttal, stressing that France had not changed its policy on immigration.

The troll looked at him suspiciously but apparently could think of no effective rebuttal.

Mr. Djerejian returned shocked at the picture of America he saw on Arab television and the absence of any effective American rebuttal.

A bundle of high explosive wired to the ignition of the priest's Jeep had proved an effective rebuttal to his charges.

He squeezed her hand and turned to go, knowing that this was not the occasion for effective rebuttal; He knew too little.

Reviewing the program in The Times, Mr. Corry wrote that while "intelligent criticisms are offered," it was, over all, "not a particularly effective rebuttal."

An effective rebuttal makes it hard for the campaign whose negative ad is destroyed to be believed about anything ever again.