The word "venture guess" can be described as taking a risk or making an attempt with uncertain outcomes. To find antonyms for this phrase, we need to look for words that exhibit a clear plan, predictability, or confidence in the outcome. Some possible antonyms for "venture guess" include "certainty," "assurance," "precision," "accuracy," and "guarantee." These words imply a sense of predictability, foreknowledge, and reliability, opposite to the unpredictability and risk-taking nature of venture guessing. Antonyms can help us better understand the concept by providing a comparison that highlights the features that distinguish venture guessing from other options with varying degrees of certainty.