What does intrusive mean?
Intrusive describes something that enters a person's attention, thoughts, space, or activities without invitation and is consequently unwelcome or disruptive. It is often used for questions, noises, advertising, behavior, and physical objects that make it difficult to focus or feel comfortable. The adjective can also refer to thoughts or images that recur unbidden, a usage common in discussions of anxiety and obsessive thinking, though an intrusive thought does not by itself indicate a mental disorder. In biology, intrusive species or organisms are those that spread into habitats where they are not native. The word generally carries a negative connotation, although its degree of severity depends on context: an intrusive question may be merely annoying, while intrusive behavior may violate personal or legal boundaries. Overall, the term marks a lack of respect for attention, privacy, environment, or established limits.
adjectiveTending to intrude or disturb someone or something, especially by being unwelcome, overly noticeable, or physically obstructive. The word can also describe thoughts, images, or sounds that enter the mind unbidden.
- Tending to interfere with or disturb someone or something, especially by entering a space or situation without permission or welcome.
- Unwelcome and persistent in a person's thoughts, as with images, ideas, or memories that recur despite efforts to dismiss them.
- Designed to attract attention, enter a space, or cause disruption, especially when this is considered excessive or unwelcome.
- Aggressively establishing presence or spreading into an environment, especially of an organism or invasive material.
"The intrusive notifications made it difficult to concentrate on the manuscript."
"A colleague's intrusive questions made the interview feel like an interrogation."
"The persistent image of the accident was intrusive for several weeks afterward."
An intrusive thought is unwelcome precisely because it arrives uninvited: the word traces back to the Latin idea of pushing something in.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Where does intrusive come from?
The word comes through French from Latin intrusus, the past participle of intrudere, meaning "to push in" or "force oneself in." That verb combines the prefix intra-, meaning "in," with trudere, meaning "push." Its development reflects the original sense of entering forcibly, from which the modern meanings concerning unwelcome intrusion developed.
Related word forms
How intrusive is actually used
The word is generally negative: it describes behavior, presences, or mental experiences that violate boundaries or distract. In environmental and biological contexts, it can be a formal technical term for an organism or material that spreads into a new area.
Easily confused with intrusive
Both words describe something unwelcome, but obtrusive emphasizes conspicuousness or affront to taste, whereas intrusive emphasizes entering someone's space, attention, or mind without invitation.