The user dictionary is a special dictionary to which you can add words from within the annotation editor. The user dictionary will always be shown in the list of dictionaries and cannot be deleted. You can use the user dictionary to add words which don't appear in any of the other dictionaries. Another use of the user dictionary is the selection of a preferred reading/translation for a word with several readings/translations. Since during a import the first reading/translation found for a word is choosen and the user dictionary is first in the list, entries in the user dictionary will be preferred.
To add an entry to the user dictionary, select an annotation
in the annotation editor and choose
.jgloss-userdictionary
in the user's home directory.