The writer last quoted, and others before him, have imagined a Chinese origin for chop, e.g., as "from chah, 'an official note from a superior,' or chah, 'a contract, a diploma, &c.,' both having at Canton the sound chăp, and between them covering most of the 'pigeon' uses of chop" (Note by Bishop Moule). But few of the words used by Europeans in Chinese trade are really Chinese, and we think it has been made clear that chop comes from India.
CHOP-CHOP. Pigeon-English (or -Chinese) for 'Make haste! look sharp!' This is supposed to be from the Cantonese, pron. kăp-kăp, of what is in the Mandarin dialect kip-kip. In the Northern dialects kwai-kwai, 'quick-quick' is more usual (Bishop Moule). [Mr. Skeat compares the Malay chepat-chepat, 'quick-quick.']
a. H. chhappar, 'a thatched roof.'
[1773.—"... from their not being provided with a sufficient number of boats, there was a necessity for crouding a large party of Sepoys into one, by which the chuppar, or upper slight deck broke down."—Ives, 174.]
1780.—"About 20 Days ago a Villian was detected here setting fire to Houses by throwing the Tickeea[[67]] of his Hooka on the Choppers, and was immediately committed to the Phouzdar's Prison.... On his tryal ... it appering that he had more than once before committed the same Nefarieus and abominable Crime, he was sentenced to have his left Hand, and right Foot cut off.... It is needless to expatiate on the Efficacy such exemplary Punishments would be of to the Publick in general, if adopted on all similar occasions...."—Letter from Moorshedabad, in Hicky's Bengal Gazette, May 6.
1782.—"With Mr. Francis came the Judges of the Supreme Court, the Laws of England, partial oppression, and licentious liberty. The common felons were cast loose, ... the merchants of the place told that they need not pay duties ... and the natives were made to know that they might erect their chappor huts in what part of the town they pleased."—Price, Some Observations, 61.
1810.—"Chuppers, or grass thatches."—Williamson, V. M. i. 510.
c. 1817.—"These cottages had neat choppers, and some of them wanted not small gardens, fitly fenced about."—Mrs. Sherwood's Stories, ed. 1873, 258.
[1832.—"The religious devotee sets up a chupha-hut without expence."—Mrs. Meer Hassan Ali, ii. 211.]