principal parts

plural noun

Definition of principal parts

: a series of verb forms from which all the other forms of a verb can be derived including in English the infinitive, the past tense, and the present and past participles

Examples of principal parts in a Sentence

Recent Examples on the Web Biden also has made ending Trump’s presidency after one term a principal part of his campaign message, and the new poll underscores the degree to which he is seen — and by a wide margin — as the Democrat best positioned to do that. Scott Clement,, 8 Sep. 2019

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'principal parts.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of principal parts

1714, in the meaning defined above

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Time Traveler for principal parts

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The first known use of principal parts was in 1714

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Dictionary Entries Near principal parts


principal parts

principal plane of symmetry

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Cite this Entry

“Principal parts.” Dictionary, Merriam-Webster, Accessed 30 Jul. 2021.

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More Definitions for principal parts

principal parts


English Language Learners Definition of principal parts

grammar : the main forms of a verb

principal parts

noun plural

Kids Definition of principal parts

: the infinitive, the past tense, and the past and present participles of an English verb


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