Gaffes, the blunders or social faux pas we commit, are often embarrassing and costly. However, there are various synonyms for the word gaffes that you can use while describing such mistakes committed by people in various settings. Some familiar substitutes for the term include bloopers, flubs, slip-ups, errors, faults, lapses, goofs, and mishaps. Other synonyms for gaffes that reflect a more serious or negative tone are blunders, faux pas, boo-boos, improprieties, mistakes, and missteps. These words can help you add variety and depth to your writing or conversation as you convey a particular message about a person's mistake.