corpse

I saw battle-corpses, myriads of them, / And the white skeletons of young men, I saw them, / I saw the debris and debris of all the slain soldiers of the war, […]

1865, Walt Whitman, “When Lilacs Last in the Dooryard Bloom’d”, in Sequel to Drum-Taps: When Lilacs Last in the Dooryard Bloom’d and other poems:

A dead body, especially that of a human as opposed to an animal.

(archaic, sometimes derogatory) A human body in general, whether living or dead.

From Middle English, from earlier corse, from Old French cors, from Latin corpus (“body”).
Displaced native English likam and English lich. The ⟨p⟩ was inserted due to the original Latin spelling. Doublet of corps, corpus, and riff. The verb sense derives from the notion of being unable to control laughter while acting as dead body.


corpse

The rest of the day and the week were spent blocking and learning the lines. The only drama was the predictable one of being ticked off for corpsing. Rupert was quite as bad as me when it came to giggling and the tea-party scene which took place between Rupert, David Parfitt, Piers Flint-Shipman and I, was too much.

1989, Kenneth Branagh, Beginning, London: Chatto & Windus, →ISBN, page 94:

There were still moments when she would halt suddenly, like an actor stranded in the middle of the stage, lines forgotten, staring goggle-eyed and making fish-mouths...Corpsing: that was the word.

Poor Damian corpsed and almost forgot his next lines. The director gave him a terrific lecture, and Alan caught hell from stage management.

1993, Bevan Amberhill, The Bloody Man, Mercury Press, →ISBN:

(intransitive, slang, of an actor) To laugh uncontrollably during a performance.

(transitive, slang, of an actor) To cause another actor to do this.

en-verb

corpse (third-person singular simple present corpses, present participle corpsing, simple past and past participle corpsed)

corpses (present singular third-person)
corpsing (participle present)
corpsed (participle past)
corpsed (past)