- characterized by intrusion or tending to intrude
- (of igneous rocks) formed by intrusion
Compare extrusive - relating to or denoting a speech sound that is introduced into a word or piece of connected speech for a phonetic rather than a historical or grammatical reason, such as the (r) often pronounced between idea and of in the idea of it
WordReference Random House Unabridged Dictionary of American English © 2026
in•tru•sive
(in tro̅o̅′siv),USA pronunciation adj.
in•tru′sive•ly, adv.
in•tru′sive•ness, n.
- tending or apt to intrude;
coming without invitation or welcome:intrusive memories of a lost love. - characterized by or involving intrusion.
- intruding;
thrusting in. - Geology
- (of a rock) having been forced between preexisting rocks or rock layers while in a molten or plastic condition.
- noting or pertaining to plutonic rocks.
- Phoneticsexcrescent (def. 2).
- 1375–1425; late Middle English; see intrusion, -ive
in•tru′sive•ness, n.
- 1. annoying, bothersome, interfering, distracting, irksome, worrisome, troublesome, irritating, disturbing.
Collins Concise English Dictionary © HarperCollins Publishers::
intrusive /ɪnˈtruːsɪv/ adj
in•tru•sion /ɪnˈtruʒən/USA pronunciation
n.
in•tru•sive•ly, adv.
in•tru•sive•ness, n. [uncountable]See -trude-.
WordReference Random House Unabridged Dictionary of American English © 2026- an act or instance of intruding: [uncountable]She hated the intrusion into her private life.[countable]The press made intrusions into his private life.
in•tru•sive•ly, adv.
in•tru•sive•ness, n. [uncountable]See -trude-.
in•tru•sion
(in tro̅o̅′zhən),USA pronunciation n.
in•tru′sion•al, adj.
- an act or instance of intruding.
- the state of being intruded.
- Law
- an illegal act of entering, seizing, or taking possession of another's property.
- a wrongful entry after the determination of a particular estate, made before the remainderman or reversioner has entered.
- Geology
- emplacement of molten rock in preexisting rock.
- plutonic rock emplaced in this manner.
- a process analogous to magmatic intrusion, as the injection of a plug of salt into sedimentary rocks.
- the matter forced in.
- s) + -iōn- -ion
- Medieval Latin intrūsiōn- (stem of intrūsiō), equivalent. to Latin intrūs(us), past participle of intrūdere to intrude (equivalent. to intrūd- v.stem + -tus past participle suffix, with dt
- Middle English 1250–1300
'intrusive' also found in these entries (note: many are not synonyms or translations):
apophysis
- dolerite
- extrusive
- godsquad
- intervene
- irruptive
- kimberlite
- lopolith
- meddlesome
- pegmatite
- ratpack
- astringer
- athlete
- batholith
- contempt
- emptor
- empty
- endomorphism
- excrescent
- guilder
- harpsichord
- harquebus
- humpy
- hypabyssal
- impertinent
- intrusive r
- invasive
- kalinite
- keyhole
- lamprophyre
- linking r
- molt
- percolate
- peremptory
- phthiocol
- pipe
- pushing
- ramp
- tobacconist
- vampire
- whimbrel
- scumble
- sill
- sphingosine
- sumptuary
- syntality