If you’d like to sound a little smarter, come across as more sophisticated, or make friends with the intellectual crowd, all you need to know to be more punctual is that punctually is not in how you sound.
strictly observant of an appointed or regular time; not late; prompt.
made, occurring, etc., at the scheduled or proper time:
pertaining to or of the nature of a point.
Just show up on time and meet deadlines and you will be more punctual, but you can never sound more punctual. ?