متأخر

متأخر

Late.

Here, 'متأخرًا' is an adverb describing the manner in which the subject arrived.

وصلت إلى الاجتماع متأخرًا.

I arrived at the meeting late.

In this sentence, 'المتأخر' is used as an adjective modifying 'الشخص' to describe someone who is late.

الشخص المتأخر يجب أن يعتذر.

The tardy person must apologize.

Here, 'متأخرًا' again is used as an adverb to describe the advised timing for arriving at school.

لا تصل متأخرًا إلى المدرسة.

Do not arrive late to school.