The antonyms for the word "unfortunate" are "fortunate," "lucky," "fortunate," "blessed," and "prosperous." These words all indicate a sense of joy, prosperity, and good fortune. For example, "fortunate" means to be favored by good luck or fortune, while "lucky" means to have good fortune bestowed upon you. "Blessed" connotes divine favor and protection, while "prosperous" indicates material wealth and success. Antonyms can add depth to language usage and serve as an effective way to convey meaning. Therefore, it is essential to be mindful of antonyms when expressing ideas and emotions in writing and speech.