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ENGLISH · A WORD WITH POSSIBILITIES

intrusive.

Tending to intrude; doing that which is not welcome; interrupting or disturbing; entering without permission or welcome.

9 characters3 syllables approx.English language

Meaning & usage

adj/ɪnˈtɹuːsɪv/
  1. Tending to intrude; doing that which is not welcome; interrupting or disturbing; entering without permission or welcome.

    Did it ever cross your mind that he might find all those questions you ask intrusive?
  2. Of rocks: forced, while in a plastic or molten state, into the cavities or between the cracks or layers of other rocks.

  3. epenthetic

  4. Designating a type of collection in which each item keeps track of what collection it is in, rather than the more conventional approach of a collection keeping track of what items it contains. An intrusive collection does not "own" its contents and a single item can be part of multiple intrusive collections.

    an intrusive linked list
Where this word comes from

Back-formation from intrusion, + -ive.

noun/ɪnˈtɹuːsɪv/
  1. An igneous rock that is forced, while molten, into cracks or between other layers of rock

Where this word comes from

Back-formation from intrusion, + -ive.

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Definitions, grammatical labels, IPA, etymology and examples: Wiktionary contributors, extracted by Kaikki / Wiktextract. Adapted under CC BY-SA 4.0. Selected fields and authored examples are shown; third-party quotations and audio are omitted. See contributor history.

Last enriched 2026-09-10. Definitions are in English. Romanizations are shown when supplied by the source; syllable estimates are omitted for unsupported scripts.