That's a completely absurd accusation.

"And do your superiors know you're following up such an absurd accusation?"

"And you have proof of these absurd accusations?"

It is better that he should have made an absurd accusation than one which might have been possible to believe.

"That is an absurd accusation, madam," Derek said just as stiffly.

On the other hand, the second half of the debate (lines 836-940) features absurd accusations that are aimed at an entirely comic villain.

Colin had been trying enough--the cajoling, followed by cold silences, absurd accusations, and ugly slurs.

How else could he have learned of that absurd accusation, unless Pitts overheard our conversation and tattled to his boss?

This is an absurd accusation, which makes a mockery of the concept of democracy.

This absurd accusation is still current.