Generally speaking, because it is an accepted ideal to be on time, and it is considered rude to be late. A more specific application is, because, being late to a job will (at some point) get you fired and being late for other things may result in you missing out on something.
The comparative is more punctual; the superlative is most punctual.
punctual? =0/
punctual
Punctual is an adjective.
The suffix of "punctual" is "-al".
What do you mean. Bhutanese people are very punctual.
Bob is my most punctual student.I am a punctual person; I am always on time.
He made it a point to always be punctual. You must be punctual to an interview or you are starting off on a bad foot.
Late, lateness
do you know someone who is alwys punctual
Punctuality (noun); punctually (adverb)
unpunctual