Blunder

Noun

 * 1) A clumsy or embarrassing mistake.

Verb

 * 1) To make a stupid mistake.
 * 2) To move blindly or clumsily.

Adjectives for Blunder
unhappy; colossal; fateful; irretrievable;astounding; disastrous; egregious; political; awful; brave; absurd; Idiotic; tactical; ill-judged; sad; marketing; glorious; gross; serious; irreparable; extravagant; incred¬ible; recent; sorry; idiomatic; curious; unpardonable.

Verbs for Blunder
aggravate—; atone for—; commit—; denounce—; fall into—; redeem —s; repair —s; —confounds; —confuses; —disturbs; —troubles.

Adverbs for Blunder
grossly; ludicrously; chimerically; ineptly; awkwardly; colossally; fatefully; irretrievably; disastrously; egregiously; politically; idiotically; irreparably; incredibly; idiomatically; grammatically; unpardonably.

Synonyms

 * blooper, boo-boo, error, faux pas, fluff, gaffe, goof, lapse, mistake, slip, stumble, thinko

Thesaurus
mess, miscue, miss, miss the mark, misspeak, mistake, muddle, muff, murder, off day, pitch, pitch and plunge, play havoc with, plunge, reel, rock, roll, sad work, screw up, screw-up, seethe, slip, slip up, snapper, solecism, sottise, spoil, stagger, struggle, stumble, stupid thing, stupidity, sway, swing, thrash about, toss, toss and tumble, toss and turn, totter, trip, tumble, unwise step, wallop, wallow, welter, absurdity, act of folly, bad job, be all thumbs, bevue, blooper, blow, blunder away, blunder into, blunder on, blunder upon, bobble, boggle, bollix, bonehead play, boner, boo-boo, botch, bull, bumble, bungle, butcher, careen, career, clumsy performance, commit a gaffe, dumb trick, err, error, etourderie, falter, faux pas, flounce, flounder, flub, fluff, folly, foozle, fumble, gaffe, gaucherie, goof, goof up, gum up, hash, howler, imprudence, indiscretion, labor, lapse, louse up, lumber, lurch, make a blunder, make a misstep, mar,

Etymology
blunda:. Cognates include Danish blunde:.