/ ɪnˈtruːd; NAmE / verb [ v ]
1.
intrude (into / on / upon sb/sth) to go or be somewhere where you are not wanted or are not supposed to be :
I'm sorry to intrude, but I need to talk to someone.
legislation to stop newspapers from intruding on people's private lives
2.
intrude (on / into / upon sth) to disturb sth or have an unpleasant effect on it :
The sound of the telephone intruded into his dreams.
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WORD ORIGIN
mid 16th cent. (in the sense usurp an office or right ; originally as entrude ): from Latin intrudere , from in- into + trudere to thrust.