Let’s start with a word that stumps even the best grammar nerds: quinoa. Those new to the pseudocereal tend to pronounce it as “QUEEN-o-ah.” But this tricky word is actually pronounced “KEEN-wah.” ...

How's your vocabulary? We've all said a word wrong in front of people. Every now and then, we remember and feel that flush of embarrassment again. And again. Well, the good news is you're not alone.