Quick Anagramatic Glob * Exception e.g. *[^host]*

/var$ ls
backups  cache  host  lib  local  lock  log  mail  opt  run  spool  tmp

/var$ ls -d *[^osht]*
backups  cache  lib  local  lock  log  mail  opt  run  spool  tmp

Of course this approach fails if you have an anagram so it should never be used for coding something serious. Yet its useful enough when you want to narrow something down when playing around or if you know for sure that you don't have anagrams to worry about.

e.g. ls -d /tmp/*[^.txt]  will list all the files without the .txt extension
e.g. ls -d /tmp/*[^.xtt]  does the same.. so be careful =)

Also if you don't mind playing with shell options you can more simply set the extglob option, yet I don't really recommend shoptions much since you can easily forget that your env is different and they tend to make things unpredictable and less portable (e.g. leaning tower of babel).

/var$ shopt -s extglob
/var$ ls -d !(host)
backups  cache  lib  local  lock  log  mail  opt  run  spool  tmp