"Talks big" is an informal idiom used to describe someone who boasts about their abilities, accomplishments, or resources. There are several synonyms for this phrase, including "brags," "boasts," "exaggerates," "grandstands," "puffs up," and "blusters." Each of these words conveys the idea of someone who talks confidently and often boastfully about themselves or their accomplishments. While some people may find this behavior off-putting, others may see it as a sign of confidence or assertiveness. Regardless of how you feel about it, understanding these synonyms for "talks big" can help you communicate more effectively and precisely in a variety of situations.