closed-class word

Từ điển WordNet v3.1 - WordNet Dictionary

noun

a word that is uninflected and serves a grammatical function but has little identifiable meaning
• Syn:
function word
• Hypernyms:
word
• Hyponyms:
determiner, determinative, preposition, pronoun, conjunction,
conjunctive, connective, continuative, particle
• Part Meronyms:
grammatical meaning