bemonster

To make monstrous or like a monster; make hideous; deform.

Thou changed and self-cover’d thing, for shame! Bemonster not thy feature!

One would think that clothing an official with decent taste was not a herculean task: yet ask a foreigner his opinion of the poor bemonstered force which protects our lives and purses. He might suppose that Dykwynkyn, or some other of the artists who work for the pantomimes, had designed the grotesque disfigurement of these unhappy men.

To fill or cover with monsters.

1812, William Tennant, Anster Fair, Edinburgh: George Goldie, 2nd edition, 1814, Canto 4, Stanza 21, p. 119, So leap’d the men, half-sepulchred in sack, Up-swinging, with their shapes be-monstring sky,

It was one of the League’s rare open exhibitions, and nonmembers in ordinary dress thronged among the cartoon-colored pavilions, the hedges of bemonstered appliqué banners, and the blazons strung on wire between trees.

To regard or treat (someone) as a monster; to call (someone) a monster.

1921, R. H. Case, Review of The Percy Reprints: The Unfortunate Traveller by Thomas Nashe, The Modern Language Review, Volume 16, No. 1, January 1921, p. 77, It […] ends with a crude but forceful intensification of the lust and blood of the Italian novella, complicated with the popular theme of scandalising the Pope and bemonstering the Jew.