The most common and most likely answer to this crossword clue is the 7 letter word INTRUDE
I've seen this crossword clue in The Guardian
I
N
T
R
U
D
E
More clues leading to the result INTRUDE
- To butt in, changing spades to no trumps, is impolite
- Barge in run with tide on the turn
- Disorderly nit, impolite to enter uninvited
- Enter unwanted suggestion, commonly coarse
- Gatecrash home, beginning to turn abusive
- Disturb cow in roundabout with no hesitation
- Disrupt batting offensive around start of Test
- Thrust oneself into untried ground
- Gatecrash lewd independent theatre first
- Disrupt current London theatre offensive
Buddy explains!
The straight part
We know that "become unwelcome" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case become unwelcome = intrude.The cryptic/wordplay part
In cryptic crossword there's often an wordplay/cryptic part as well.This part involves a more complex hint, such as an anagram, homophone, hidden word, etc.
Sadly, We don't have an explanation for this specific crossword clue yet.
What does INTRUDE mean?
INTRUDE verb- To thrust oneself in; to come or enter without invitation, permission, or welcome; to encroach; to trespass.
- To force in.