How can I uninstall adobe acroread?

Or if that still doesn't work and returns Package acroread is not installed, so not removed you can try sudo apt-get purge adobereader-enu && sudo apt-get autoremove.

(Taken from http://ubuntuforums.org/showthread.php?t=1453166#5)

There is an UNINSTALL script in the same folder where you installed it.

$ locate UNINSTALL
/usr/local/Adobe/Reader9/bin/UNINSTALL

$ cd /usr/local/Adobe/Reader9/bin
$ sudo ./UNINSTALL

Done!

I also tried many ways to uninstall adobe reader 9 and this method worked for me

sudo apt-get purge acroread-bin
sudo apt-get autoremove