inaccurate

If what you tell me is not exactly right, it is inaccurate. If you measured the amount of rainfall incorrectly, your data about the climate would be inaccurate.

Accuracy means being very precise and getting the information right. When something is inaccurate, it is the opposite of exact. If you get a question wrong on a test, your teacher will not say, "You, sir, are inaccurate," she'll just say you are wrong. She might also explain that your inaccurate methodology led to an inaccurate response.

Definitions of inaccurate
1

adj not exact

“an inaccurate translation”
“the thermometer is inaccurate
Synonyms:
away, outside
(of a baseball pitch) on the far side of home plate from the batter
faulty, incorrect, wrong
characterized by errors; not agreeing with a model or not following established rules
unfaithful
not trustworthy
wide, wide of the mark
not on target
incorrect, wrong
not correct; not in conformity with fact or truth
inexact
not exact
imprecise
not precise
Antonyms:
accurate
conforming exactly or almost exactly to fact or to a standard or performing with total accuracy
close, faithful
marked by fidelity to an original
dead-on
accurate and to the point
hi-fi, high-fidelity
characterized by minimal distortion in sound reproduction
surgical
performed with great precision
straight
in keeping with the facts
dead on target, true
accurately placed or thrown
right, veracious
precisely accurate
correct, right
free from error; especially conforming to fact or truth
exact
marked by strict and particular and complete accordance with fact
precise
sharply exact or accurate or delimited
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