The most common and most likely answer to this crossword clue is the 7 letter word OBTRUDE
I've seen this crossword clue in The Times
O
B
T
R
U
D
E
More clues leading to the result OBTRUDE
- Thrust forward, storming redoubt
- Redoubt rebuilt to be more prominent
- He died, supported by Duke in real push forward
- Thrust in unwelcome fashion battered redoubt
- Push out foolish doubter
- Butt in middle of ashtray held by old boy with no manners
- Old boy, impolite, taking time to butt in
- Push out old boy over time getting ill-mannered
- Ring and baronet lacking refinement become painfully obvious
- Doubt possibly about King beginning to emerge and become prominent
Buddy explains!

The straight part
We know that "Thrust forward" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case thrust forward = obtrude.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 OBTRUDE mean?
OBTRUDE verb- To proffer (something) by force; to impose (something) on someone or into some area.
- To become apparent in an unwelcome way, to be forcibly imposed; to jut in, to intrude (on or into).
- To impose (oneself) on others; to cut in.