1. An embarrassing mistake
   - blooper [N. Amer], bloomer, bungle, pratfall, foul-up, flub [N. Amer], botch, boner, boo-boo, blue [Austral, NZ]

1. Commit a faux pas or a fault or make a serious mistake
   "I blundered during the job interview"
   - drop the ball, sin, boob, goof 
2. Make one's way clumsily or blindly
   - fumble 
3. Utter impulsively
   "He blundered his stupid ideas"
   - blurt out, blurt, blunder out, ejaculate

Derived forms: blunders, blundering, blundered

See also: blunderer

Type of: breach, break, error, fault, go across, go against, go through, infract, mistake, mouth, offend, pass, speak, talk, transgress, utter, verbalise [Brit], verbalize, violate

Encyclopedia: Blunder

• diffusive
• diffusivity
• diffusor
• diflunisal
• dig
• dig in
• dig into
• dig out
• dig up
• digamma
• digamy
• digastric
• digenesis
• digerati
• digest
• digester
• digestibility
• digestible
• digestibleness
• digestion
• digestive
• digestive biscuit
• digestive fluid
• digestive gland
• Latin-American