The idiom ”Grin from ear to ear" means

Very angry

Very hungry

Very healthy

Very happy

All of the above

The idiom “Grin from ear to ear” means بہت زیادہ خوش ہونا یا مطئمن ہونا

For example:

On hearing the good news, Asif grinned from ear to ear.

خوشخبری سن کر آصف بہت خوش ہوا یا بہت مطئمن ہوا۔