There are about a million words in the English language, but do you know the longest word in English? You may think it’s ...

The longest sentence using one word is a stumper. advertisement. ... Get Reader’s Digest’s Read Up newsletter for more grammar, humor, travel, tech, cleaning and fun facts all week long.

I know the longest word in the whole English language,” Jimmy tells Jenny by the playground swings. It's antidisestablishmentarianism. Jenny slurps up the last of her juice box, unimpressed.