mass noun

mass noun (plural mass nouns)

1. A noun that normally cannot be counted.

   Synonyms: material noun, non-count noun, uncountable noun

   Antonyms: countable noun, count noun

• In English, mass nouns, such as information and money, may have no plural form (for example, *informations is invalid in most varieties of English), and they are not used with the indefinite article or numbers in almost all of their senses.
• Many mass nouns, such as whisky, can also be count nouns when they refer to a varietal (“Scotch and Canadian whiskies”) or to denote a serving (“please bring us two whiskies”).
• Conversely many countable nouns can also be used as mass nouns.

• “mass noun”, in Lexico, Dictionary.com; Oxford University Press, 2019–2022.