At the time, I put this down to professional courtesy.
The other 46 percent said they would represent them, but only as a professional courtesy.
He did so, the statement said, out of professional courtesy.
Either that, or they were extending him their professional courtesy.
"Thank you," she said, in response to the professional courtesy.
As a professional courtesy, one military man to another, I will give you three days to think about my offer.
I'd be happy to sit down with you as a professional courtesy.
For the first time, the bar last year published a code of professional courtesy.
Until the 1950's, it was common practice for theaters to provide a "professional courtesy" to others in the business.
That business had rules, and Clark should follow them as a matter of professional courtesy.