blunder (n.)
- absurdity
 - blooper
 - blow
 - bobble
 - boner
 - boo-boo
 - botch
 - bull
 - bungle
 - butcher
 - careen
 - career
 - err
 - error
 - falter
 - flounce
 - flounder
 - flub
 - fluff
 - folly
 - fumble
 - gaffe
 - gaucherie
 - goof
 - hash
 - howler
 - imprudence
 - indiscretion
 - labor
 - lapse
 - lumber
 - lurch
 - mar
 - mess
 - miscue
 - miss
 - mistake
 - muddle
 - muff
 - murder
 - pitch
 - plunge
 - reel
 - rock
 - roll
 - slip
 - snapper
 - solecism
 - spoil
 - stagger
 - struggle
 - stumble
 - stupidity
 - sway
 - swing
 - toss
 - totter
 - trip
 - tumble
 - wallop
 - wallow
 - welter
 
blunder (v.)
- blow
 - bobble
 - boggle
 - bollix
 - botch
 - bull
 - bumble
 - bungle
 - butcher
 - careen
 - career
 - err
 - falter
 - flounce
 - flounder
 - flub
 - fluff
 - fumble
 - goof
 - hash
 - labor
 - lapse
 - lumber
 - lurch
 - mar
 - mess
 - miss
 - misspeak
 - mistake
 - muddle
 - muff
 - murder
 - pitch
 - plunge
 - reel
 - rock
 - roll
 - seethe
 - slip
 - spoil
 - stagger
 - struggle
 - stumble
 - sway
 - swing
 - toss
 - totter
 - trip
 - tumble
 - wallop
 - wallow
 - welter
 
Oh wad some power the giftie gie us
To see oursel's as others see us!
It wad frae monie a blunder free us,
And foolish notion.
Commonly quoted, "It is worse than a crime,—it is a blunder," and attributed to Talleyrand.
In men this blunder still you find,—
All think their little set mankind.
Youth is a blunder; manhood a struggle; old age a regret.