THESAURUS
miscalculate
deviate, discount, disregard, err, fall into error, go amiss, go astray, go awry, go wrong, judge amiss, lapse, misappreciate, miscompute, misconjecture, misconstrue, miscount, misdeem, misesteem, misestimate, misevaluate, misinterpret, misjudge, misread, misreckon, misthink, misunderstand, misvalue, overestimate, overlook, overprize, overrate, overvalue, slip, slip up, stray, stumble, trip, underestimate, underprize, underrate, undervalue, wander
ROGET THESAURUS
miscalculate
Misjudgment
VB
misjudge, misestimate, misthink, misconjecture, misconceive, fly in the face of facts,
miscalculate, misreckon, miscompute, overestimate, underestimate, prejudge, forejudge, presuppose, presume, prejudicate, dogmatize, have a bias, have only one idea, jurare in verba magistri, run away with the notion, jump to a conclusion, rush to a conclusion, leap to a conclusion, judge hastily, shoot from the hip, jump to conclusions, look only at one side of the shield, view with jaundiced eye, view through distorting spectacles, not see beyond one's nose, dare pondus fumo, get the wrong sow by the ear, give a bias, give a twist, bias, warp, twist, prejudice, prepossess.
Error
VB
be erroneous, cause error, mislead, misguide, lead astray, lead into error, beguile, misinform, delude, give a false impression, give a false idea, falsify, misstate, deceive, lie, err, be in error, be mistaken, be deceived, mistake, receive a false impression, deceive oneself, fall into error, lie under error, labor under an error, be in the wrong, blunder, misapprehend, misconceive, misunderstand, misreckon, miscount,
miscalculate, play at cross purposes, be at cross purposes, trip, stumble, lose oneself, go astray, fail, be in the wrong box, take the wrong sow by the ear, put the saddle on the wrong horse, reckon without one's host, take the shadow for the substance, dream.
Inexpectation
VB
not expect, be taken by surprise, start,
miscalculate, not bargain for, come upon, fall upon, be unexpected, come unawares, turn up, pop, drop from the clouds, come upon one, burst upon one, flash upon one, bounce upon one, steal upon one, creep upon one, come like a thunder clap, burst like a thunderclap, thunder bolt, take by surprise, catch by surprise, catch unawares, catch napping, yach, pounce upon, spring a mine upon, surprise, startle, take aback, electrify, stun, stagger, take away one's breath, throw off one's guard, astonish, dumbfound.