niepoprawny v angličtině:

Her answer was incorrect.

The answers are both incorrect.

Cross out the incorrect words.

A new study suggests that hospital records for patients older than 65 are often incorrect, which may lead to serious treatment errors.

This data is incorrect.

Native French speakers often add spaces before punctuation in other languages even though it is usually incorrect.

Because this is such a highly technical subject, I would like to point out in advance the likelihood that some of what I'm about to say may include information that is incorrect.

the doctor gave you incorrect advice / strictly speaking, the form of address was incorrect

I gave an incorrect answer.

I'm sorry but your answer is incorrect.

Therefore, this argument is incorrect.

His version of the accident is incorrect.

I made a decision and later found out that it was incorrect

The spelling in this word is incorrect.

Strictly speaking, this sentence is grammatically incorrect.