Re:  how to use the woid  "propinquity" in a sentence

There's an old announcer's exercise quoted by Jerry Lewis (!) which
ends in the line,
"Ten apathetic, sympathetic, diabetic old men on roller skates with a
marked propinquity toward procrastination and sloth."  Not a
sentence, but may suit your purpose.

The "sometimes you just can't get useless information out of your head" Rev.