On a country walk not long ago I came across a sign on a gate.
OUR COWS ARE VERY FRIENDLY
It went on:
IF THEY START TO MOVE TOWARDS YOU
WAVE YOUR ARMS IN THE AIR AND SHOUT
This was, I have to admit, rather concerning. And it promptly got worse:
DO NOT RUN!
I decided that friendly probably wasn't exactly the word they were looking for, and went back another way.
Word To Use Today: friendly. This word comes, of course, from friend, which comes in turn from the Old English frëond.