Big talkers are individuals who tend to boast about their achievements, skills, and qualities. However, there are many alternate words and phrases that can be used to describe big talkers. Some possible synonyms include braggarts, blowhards, boasters, windbags, gasbags, show-offs, egotists, self-promoters, and attention-seekers. Each of these words conveys a sense of someone who is self-centered and overly confident in their abilities. They may also be perceived as insincere or lacking in substance, as their talk often does not match their actions. Overall, these synonyms offer a range of options for describing those who engage in big talk and self-aggrandizement.