punc·tu·al /ˈpʌŋkʧəwəl, ʧəl/
1. Consisting in a point; limited to a point; unextended. [R.] “This punctual spot.”
The theory of the punctual existence of the soul. -- Krauth.
2. Observant of nice points; punctilious; precise.
Punctual to tediousness in all that he relates. -- Bp. Burnet.
So much on punctual niceties they stand. --C. Pitt.
3. Appearing or done at, or adhering exactly to, a regular or an appointed time; precise; prompt; as, a punctual man; a punctual payment. “The race of the undeviating and punctual sun.”
These sharp strokes [of a pendulum], with their inexorably steady intersections, so agree with our successive thoughts that they seem like the punctual stops counting off our very souls into the past. -- J. Martineau.
adj : acting or arriving or performed exactly at the time
appointed; "she expected guests to be punctual at
meals"; "he is not a particularly punctual person";
"punctual payment" [ant: unpunctual]