The word "hoser" is a slang term that originated in Canada to refer to someone who is inept, foolish, or uncultured. Unfortunately, there are no official antonyms for this word as it is not widely recognized in standard English. However, some people may use words like competent, smart, or sophisticated to describe the opposite of a hoser. It is important to note that the word hoser is considered derogatory and should not be used to label anyone. Instead, opt for more positive and respectful language to describe people based on their character, skills, and achievements.