Despite his polished bedside manner, the doctor's quackhood was exposed when his miracle tonic failed to cure anyone.

The trained duck walked quackingly across the stage, stealing the audience's attention.

Her homemade costume looked quackier under the party lights, making everyone laugh.

The quacksalving clinic promised miracle cures and charged desperate patients exorbitant fees.

At the annual costume party, his rubber duck hat was undoubtedly the quackiest accessory of the night.

The conference was criticized for inviting quackademics who promoted unverified medical claims.

The conference panel dismissed his quackademic theories as dangerously misleading.

The department expelled a notorious quackademic after his pseudoscientific theories endangered patients.

When the old duck quacketh at dawn, the sleepy farmhouse stirs.

Every evening, the old pond-side goose quackles softly as the sun sets.