noun
error, misunderstanding
Synonyms: aberration, blooper, blunder, boo-boo, bungle, confusion, delusion, erratum, false move, false step, fault, faux pas, flub, fluff, gaffe, illusion, inaccuracy, inadvertence, lapse, misapplication, misapprehension, miscalculation, misconception, misinterpretation, misjudgment, misprint, misstatement, misstep, muddle, neglect, omission, overestimation, oversight, slight, slip, slip of tongue, slipup, snafu, solecism, trip, typographical error, underestimation
Antonyms: accuracy, calculation, certainty, correction, correctness, proof, success, truth, understanding
verb
mix up, misunderstand
Synonyms: addle, be off the mark, be wrong, blunder, botch, bungle, confound, confuse, deceive oneself, err, fail, get wrong, goof, have wrong impression, jumble, lapse, make a mess, misapprehend, miscalculate, misconceive, misconstrue, miscount, misdeem, misinterpret, misjudge, misknow, misread, miss, miss the boat, not know, omit, overestimate, overlook, put foot in, slip, slip up, snarl, take for, tangle, underestimate
Antonyms: be certain, be sure, comprehend, interpret, perceive, understand