Word/words to describe someone who completes a task in a very quick time, despite having no obligation to do so?

2018-03-30 07:15:17

My professor incorrectly inputted a grade of mine and I emailed him to alert him of this error.

Context: In my experience, professors take an ungodly amount of time to correct a mistake. I was expecting to not receive a response or a correction for several days or even weeks.

My professor within a span of three hours, emailed me his sincerest apologies for his error, corrected the grade, and assured me this would never happen again. Another detail - we are on spring break.

I want to thank him for this, so . . . "Word/words to describe someone who completes a task in a very quick time, despite having no obligation to do so?"

To act with dispatch, expeditious. I would say that these are a bit too pedantic sounding for an email. Prompt is a bit better, though I personally would express it with simple English.

  • To act with dispatch, expeditious. I would say that these are a bit too pedantic sounding for an email. Prompt is a bit better, though I personally would express it with simple English.

    2018-03-30 10:01:17