You don't have to end all your adverbs in -ly to talk right.
We'll tell you all the perpendiculars
You all would not have guessed some of these
They started as same word, but their meanings have drifted apart over time.
We're intent on clearing it up
'Poets laureate'? 'Court-martials'? The curious history of postpositive adjectives in English.
The most common vowel sound in English causes many spelling problems.