"Hoity- toity" and "hoi polloi" are pretty much opposite in meaning, but at least since The Lovin' Spoonful used "hoi polloi" (apparently) as a reference to the clientele at an upscale resort ("Jug Band Music"), I've seen that term used more and more - by people who should know better - to refer to the upper classes.


Oh, and, GUEST,weerover, you said:
"Actually, the principal definition of "ensure" is to make sure, and "insure" can also have this meaning."

Which reminds me of another often mixed-up pair of homophones:

"The principle rule to apply in science is the principal of parsimony."

Then there's this one:

"Godiva flaunted the law by flouting her unclad charms in public."

"