open word class

/ˈoʊpən wɜːrd klæs/

grammatical categories that can function as multiple parts of speech

Verbs, nouns, and adjectives belong to the open word class.

This means they can be freely added to a language.

technical

A grammatical category of words that can function as multiple parts of speech and can be freely added to a language (e.g., verbs, nouns, adjectives)

In English, words like 'run' can be both verbs and nouns, making them part of the open word class.

This flexibility is a key feature of open word classes.

Contrast with closed word classes (e.g., pronouns, prepositions), which have fixed members.

Collocations

closed word classgrammatical categories with fixed members (e.g., pronouns, prepositions)

grammatical categories with fixed members

Common open word classes include verbs, nouns, adjectives, and adverbs.

Open word classes can be freely added to a language, unlike closed word classes.

Derived from the linguistic distinction between words that can be freely added to a language (open) and those with fixed membership (closed).

Open word classes are often contrasted with closed word classes, which have a limited set of members (e.g., pronouns, prepositions).

open

able to be freely added to a language

adjective

word class

a grammatical category of words

noun phrase

English Dictionary