What about `[!abc]`?

The wildcard [!abc] matches any single character that is not 'a', 'b', or 'c'. For example, if you use this wildcard in a command like ls file[!abc].txt, it would match files named file1.txt, file2.txt, or fileX.txt, but it would not match filea.txt, fileb.txt, or filec.txt.