subs. (old; now recognised).—An officious bungler; a SPOIL-SPORT (q.v.). [From a character in The Busybody; see quot. 1709.]

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  1709.  CENTLIVRE, The Busy Body, iii. 5. That unlucky dog MARPLOT … is ever doing mischief, and yet (to give him his due) he never designs it. This is some blundering adventure, wherein he thought to show his friendship, as he calls it.

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  1764.  A. MURPHY, No One’s Enemy but his Own, i. You are the very sieve of your own intentions; the MARPLOT of your own designs.

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  1785.  GROSE, A Classical Dictionary of the Vulgar Tongue, s.v.

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  1844.  THACKERAY, Barry Lyndon, ch. ii. p. 32. ‘You great blundering MARPLOT—you silly beggarly brat … hold your tongue!’

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  1848.  EMERSON, Spiritual Laws, ‘Essays,’ 1 S. p. 125. If we will not be MARPLOTS with our miserable interferences, the work … would go on far better than now.

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