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collective noun
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n.
A noun that denotes a collection of individuals regarded as a unit.

Usage Note: In American usage, a collective noun takes a singular verb when it refers to the collection considered as a whole, as in The family was united on this question. The enemy is suing for peace. It takes a plural verb when it refers to the members of the group considered as individuals, as in My family are always fighting among themselves. The enemy were showing up in groups of three or four to turn in their weapons. In British usage, however, collective nouns are more often treated as plurals: The government have not announced a new policy. The team are playing in the test matches next week. A collective noun should not be treated as both singular and plural in the same construction; thus The family is determined to press its (not their) claim. Among the common collective nouns are committee, clergy, company, enemy, group, family, flock, public, and team. Note that collective nouns always refer to people or living creatures. Similar inanimate nouns, such as furniture and luggage, differ in that they cannot be counted individually. It is ungrammatical to say a furniture or a luggage. These nouns are called mass nouns or noncount nouns, and they always take a singular verb. See Usage Note at group.

The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2022 by HarperCollins Publishers. All rights reserved.
 

Indo-European & Semitic Roots Appendices

    Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:

    Indo-European Roots

    Semitic Roots

    The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.