JABBER
Source: 566, 567
jabber. Jabber, v.i. to talk idly, chatter, prate
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Jab″ber (?), v. i. [imp. & p. p. Jabbered (?); p. pr. & vb. n. Jabbering.] [[Cf. Gibber, Gabble.]] To talk rapidly, indistinctly, or unintelligibly; to utter gibberish or nonsense; to chatter. Swift.