venture on /into / upon (something) = try (something risky)
- We ventured on a walk on the beach, although the weather was terrible.
- I wouldn't venture on a trip on such a cold day.
- We ventured into a new business. It was risky but, lucky for us, it turned out a success.
- I have ventured on a new business opportunity.
- We ventured on a new project with the company.
- Do not venture into big deals with people you don 't know well and don 't trust enough.