Misles

Up until I was in my twenties, I read mis-led as misle-d, formed from a nonexistent verb misle. In my head, I pronounced the first syllable like miserly (because misling someone was such a small-minded nasty thing to do). I never noticed that I never saw the other forms of this verb (to misle, misling, he misles), and for some reason, I never actually said the word out loud to anyone so I never found out that I had made up misle out of the whole cloth of my imagination. Then one day, I read a newspaper article where misled and mislead occurred in consecutive lines. Oh!

The misreading of misled is so common that it has given rise to the OED entry mizzle, v.2, and the variant form misle (with various pronunciations) rates entries in Urban Dictionary and similar sites.

There has even been a word coined for words like misled. The word is misle, and misled is likely the most common one. Here is a list of misles compiled by Donna Richoux (https://groups.google.com/g/alt.usage.english/c/SFoQ7-8L-0o, retrieved 16 Feb 2021).

Besides misled, I recall beribbone-d and infrare-d from my childhood (the parallel with ultra-violet didn't help).

The same phenomenon occurs with spoken words, where it is generally referred to as "folk etymology".