I agree with nearly every one else here that it was a dumb idea to remove "Learn Spelling" in the new Evernote. I'm just thinking, "What the heck?! Really?!" Removing the ability to "Learn spelling" and still include the annoying little red dots indicating that a word is misspelled, has to be a violation of fundamental programming 101.
Fortunately, there is a pretty simple way to "Learn spelling," at least on a Mac. I'm using macOS Big Sur and opening the Dictionary App (in the Applications folder) will allow me to type in the affected word and then in that very field where I type the wo