Open English Wordnet
Nouns
(n)ventureany venturesome undertaking especially one with an uncertain outcome (n)speculation, venturean investment that is very risky but could yield great profits“he knew the stock was a speculation when he bought it” (n)venturea commercial undertaking that risks a loss but promises a profit Verbs
(v)venture, embarkproceed somewhere despite the risk of possible dangers“We ventured into the world of high-tech and bought a supercomputer” (v)guess, venture, pretend, hazardput forward, of a guess, in spite of possible refutation“I am guessing that the price of real estate will rise again”,
“I cannot pretend to say that you are wrong”