#1 incorrect a. [wrong] not correct; not in conformity with fact or truth; "an incorrect calculation"; "the report in the paper is wrong"; "your information is wrong"; "the clock showed the wrong time"; "found themselves on the wrong road"; "based on the wrong assumptions". wn
#2 incorrect s. (of a word or expression) not agreeing with grammatical principles. wn
#3 incorrect s. [faulty, wrong] characterized by errors; not agreeing with a model or not following established rules; "he submitted a faulty report"; "an incorrect transcription"; the wrong side of the road". wn
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