The most common and most likely answer to this crossword clue is the 7 letter word IMPETUS
I've seen this crossword clue in The Times
I
M
P
E
T
U
S
More clues leading to the result IMPETUS
- Namely, union's bringing in police force
- Drive time's up, unfortunately
- One problem’s arisen about favourite drive
- Energy reforms suit MEP
- Force items up cracks
- Drive shown by one politician in France and America
- Drive shown by politician in refurbished suite
- One's favourite American drive
- Sort of mine not left by American force
- Momentum of this writer's dog, perhaps
Buddy explains!

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 IMPETUS mean?
IMPETUS noun- Something that impels; a stimulating factor.
- A force, either internal or external, that impels; an impulse.
- The force or energy associated with a moving body; a stimulus.
- An activity in response to a stimulus.