right and suitable, so that something is done as it should be done

Do you know the correct way to shut the machine down?

I think you've made the correct decision.

taking care to speak or behave in a way that follows the accepted standards or rules

He is always very correct in his speech.

to make something right or accurate, for example by changing it or removing mistakes

to mark the mistakes in a piece of work (and sometimes give a mark to the work)

I spent all evening correcting essays.

to tell somebody that they have made a mistake

Correct me if I'm wrong, but isn't this last year's brochure?

Yes, you're right—I stand corrected.

‘It's Yates, not Wates,’ she corrected him.

‘She's his girlfriend.’ ‘His sister,’ Ian corrected.

LEARNit Dictionary