slip-up (noun) blunder: mistake
Sinonime: blooper, boner, boo-boo, bungle, dumb move, dumb thing to do,
error,
fault,
faux pas, flub, flub-up, fluff, gaffe, goof, howler, impropriety, inaccuracy,
indiscretion,
lapse, muff,
oversight,
slip, slip-up, solecism,
trip*
Antonime: accuracy,
correction,
fix,
restitution