carbuncle

"He was absolutely slammed down by the architectural establishment," said Clarke of the King's attacks on some modern design plans, such as in 1984 calling a proposed extension to the National Gallery a "monstrous carbuncle".

The then Prince of Wales described a proposed extension of London's National Gallery as a "monstrous carbuncle on the face of a much-loved and elegant friend".

Mr Venturi's design was chosen following the cancellation of a proposed extension to the National Gallery, famously derided as a "monstrous carbuncle" on Trafalgar Square by Prince Charles.

Watching Donald Trump speak is like watching a festering carbuncle explode in a spray of pus and blood.

He disdained a proposed addition to London’s National Gallery as “a monstrous carbuncle on the face of a much-loved and elegant friend.”