...
To select a Query Synonym file:
Go to Manage > Index > Query Synonyms
Select one of the existing synonym files in the Standard Synonyms drop-down list
...
Click Add
The file appears under the Standard
...
Synonyms list
Note: you can add multiple synonym files to Standard Synonyms
Editing an Existing Synonym File
You can only edit Synonym files that have been added and are listed under Standard Synonyms. To edit:
Click Edit next to the file name
Add, modify or delete entries
...
Click Save when you are done
Adding a New Synonym File
To add your own Query Synonym list:
Select New Synonym File from the drop-down list
Click Add to bring up the Synonym Editor
Add entries as shown in the example above
Click Save when you are done
The new file will appear under Standard Synonyms