Just one quick note: though you were able to Google "etui," you actually didn't arrive at the definition usually used in crossword puzzles, which is more like this: A small, usually ornamental case for holding articles such as needles. But I learned that from years of crossword puzzles! And though I look things up occasionally, it's usually the next day when I don't have time to finish the puzzle, but I'm curious about one or two clues.
Of all the things to rail at these days, people who look things up while doing the crossword puzzle shouldn't be one of them.