$ sudo apt-get remove gforth-lib 

Uninstall gforth-lib including dependent package

If you would like to remove gforth-lib and it's dependent packages which are no longer needed from Ubuntu,

$ sudo apt-get remove --auto-remove gforth-lib 

Use Purging gforth-lib

If you use with purge options to gforth-lib package all the configuration and dependent packages will be removed.

$ sudo apt-get purge gforth-lib 

If you use purge options along with auto remove, will be removed everything regarding the package, It's really useful when you want to reinstall again.

$ sudo apt-get purge --auto-remove gforth-lib 

See Also,