Hint husband ignored: impolite to butt in (7)

I believe the answer is:

intrude

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But I can't explain it at all! Could you help me understand?

(Other definitions for intrude that I've seen before include "Be unwelcome guest" , "Enter uninvited and unwelcome" , "Join in without being invited or wanted" , "Come in when not wanted" , "Come in uninvited" .)

I've seen this clue in The Sun.

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