a. and sb. [abbrev. of L. antepænultima: see next.]

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  A.  adj. Preceding the penult; the last but two. Orig. a term of Prosody, but also used otherwise.

2

1585.  James I., Ess. Poesie (Arb.), 57. Or question and digestion, It rymes in ques and ges, albeit they be bot the antepenult syllabis.

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1597.  T. Morley, Introd. Mus., 76. Your penult and antepenult notes.

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1852.  Dana, Crust., I. 631. Carapax … extending to antepenult thoracic segment.

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  B.  sb. [The adj. used absol., sc. syllable.]

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c. 1620.  A. Hume, Orthogr. Brit. Tong., 22. Never farther from the end then the third syllab, quhilk the grammareanes calls the antepenult.

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1755.  Johnson, Gram. Pros. Words in ion have the accent upon the antepenult.

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