(of a noun) not composed of the same number of syllables in all of its inflected forms, as Latin corpus, corporis.
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How to use imparisyllabic in a sentence
I give, for simplicity, the nominative, adding the stem in the case of imparisyllabic words.The Romance of Words (4th ed.) | Ernest Weekley
British Dictionary definitions for imparisyllabic
(of a noun or verb in inflected languages) having inflected forms with different numbers of syllables: Compare parisyllabic
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012