Dictionary
Words, grammatical forms and meanings linked to the ontology.
integrated relative clause en · NOUN
Meanings
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Synonym of restrictive relative clause.
Integrated relative clauses are crucial parts of the structures of their sentences, and couldn’t be left out without grossly changing the structure and the meaning, often making the sentence completely vacuous. (Other books call them “restrictive” or “defining” relatives – terms I don’t use, because the clauses in question don’t always restrict and don’t always define.) The most important thing to remember about them is that in writing they are not flanked by commas. Here’s an example, with the integrated relative clause in square brackets: This is the package [that I’ve been waiting for __ ].
2024, Geoffrey K. Pullum, The Truth About English Grammar, Polity Press, →ISBN, pages 110-111:
Forms
Synonyms
restrictive relative clause