Sc. var. GABBLE sb. and v.; hence Yabbler = GABBLER. (Cf. yab, yabber = GAB, GABBER.)

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1808.  Jamieson, To yabble, v.n., to gabble, Fife.

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1819.  W. Tennant, Papistry Storm’d (1827), 204. And than sic skellochin’ and shout,… Was never sic a yabble!

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1871.  W. Alexander, Johnny Gibb, xi. There was a general … clustering about him … as Samie ‘yabbled’ out the particulars.

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1901.  Lawson, Remin. Dollar Acad., 48. An outpost of these cacklers and yablers sounded the alarm.

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