[f. SYLLABIC a. + -NESS.] The quality of being syllabic.

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1888.  Sweet, Hist. Engl. Sounds, § 21. Syllabicness implies an appreciable duration and force. Ibid., § 22. A vowel … can lose its syllabicness, especially in combination with another vowel, with which it then forms a diphthong.

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