FieldWorks uses Hunspell for spell checking.

Following are dictionaries for some of the most common analysis2 languages. More languages can be added and if you have dictionaries you would like to share with others, please send them to To use them in Windows, download the zip file of which ever language you want and extract the contents. Save the extracted *aff and *dic files in the hunspell folders. The location is
C:\%appdata%\hunspell (Windows Vista/7/8/10/11), or
C:\Documents and Settings\<userlogin>\Application Data\Hunspell (XP).

Once the dictionary files have been saved in the appropriate location, the language is available for selection as a spelling dictionary.1

1To update which spelling dictionary to use, go to File -> Project Management -> FieldWorks Project Properties, then select the Writing Systems tab, select the writing system you want to select the dictionary for and click the Modify button. Under the “Spelling dictionary” label in the lower right of the dialog, select the language to use.

2Spelling dictionaries for vernacular languages are different. They are output from Flex not referenced by Flex. If you have a wordlist you want be use to create a vernacular spelling dictionary, please contact