Toots one horn is a phrase that means to brag, boast or show off about one's achievements or abilities. Synonyms for this phrase include blow one's own trumpet, crow, flaunt, parade, strut, vaunt, promote oneself, sing one's own praises and puff oneself up. These phrases all communicate a sense of self-promotion or self-aggrandizement, and often have a negative connotation. It's important to be humble and gracious when talking about one's accomplishments, rather than coming across as conceited or narcissistic. Using synonyms for tooting one's own horn can help soften the impression of boasting and demonstrate a more modest attitude.