The most common and most likely answer to this crossword clue is the 7 letter word VENTURE
I've seen this crossword clue in Financial Times
V
E
N
T
U
R
E
More clues leading to the result VENTURE
- Dare unleash river . . . .
- Opening game turned around by header from Eden Hazard
- Commercial enterprise opening beside Yorkshire river
- Speculate release; advocate's good to go
- Enterprise’s opening quarter ridden with frequent losses
- Last time to remove dead after second Everest mission
- Project release certain in the absence of leader
Buddy explains!

The straight part
We know that "Dare" is the straight/definition part of the clue. The straight part is often a synonym or definition, in this case dare = venture.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 VENTURE mean?
VENTURE noun- A risky or daring undertaking or journey.
- An event that is not, or cannot be, foreseen.
- The thing risked; especially, something sent to sea in trade.
- To undertake a risky or daring journey.
- To risk or offer.
- To dare to engage in; to attempt without any certainty of success. Used with at or on
- To put or send on a venture or chance.
- To confide in; to rely on; to trust.
- To say something.