To edit a word in the block list:
Select Options
Select Plug-Ins
Highlight Content Filtering
Click Settings
Select Blocked Words tab
Highlight the word you want to edit
Type in your changes
Press Modify
Press OK.
You can quickly access the plug-in's properties by right clicking on its name in the Left Panel of Outpost Firewall's main window.
About blocking a site by words
Adding words to the block list