assish

Characteristic of an ass or donkey.

Further, he quickly got him a beast to ride on, far, for sumptuous glory, beyond — though as to nature as assish a creature as — that on which Balaam was wont to ride; and by this exaltation he not only became more stately, but the horns of the beast would push for him.

On the 24th March, 1875, a donkey-show, which has since been continued periodically, was held in connection with Mr. Orsman's work; and on that occasion the assish celebrity COSTER, depicted in our engraving, was presented to Lord Shaftesbury by the exhibitors, amid a scene of great enthusiasm.

Stupid or obstinate; asinine.

c. 1795, Peter Pindar (John Wolcot), Liberty's Last Squeak an assish, mulish, packhorse clan

All taffy so far, except “Sigma,” whose lucubrations make me think of dear old Gurowski's phrase of objurgation— “Sir, you are an asinine assish ass!”