I thought of a polite excuse, but instead what came out was: "Not interested."
Murmuring a polite excuse, he drifted down the long expanse of the gallery.
After a while, he made a polite excuse and departed.
You'll be lucky to get a polite excuse as they pass you by.
Women flocked around him, and he, the idiot, always turned them down with some polite excuse.
He shook hands with Weston, made a polite excuse.
She glanced around for an escape route and tried to think up a polite excuse.
Some do come by, but make a polite excuse and never come back.
Cassidy brushed the thought away, unwilling to try to analyze his friend or make polite excuses for him.
If nothing else, he can make up a polite excuse and call for an early beam-out.