Other forms: boasted; boasts; boasting
When you boast you are bragging about yourself and your accomplishments (or maybe those of your family), often to the boredom and annoyance of your audience.
Used as either a noun or a verb, boast usually suggests exaggeration, vanity, or pride. Along those lines, English poet Sir Thomas Overbury, who died in 1613, once said, "The man who has nothing to boast of but his illustrious ancestry is like the potato — the best part underground." However, the word can also be used in a positive way: a town can boast a new library, or a school can boast a high graduation rate.