An honorific is the title used to address someone. In English it could be Ms., Mr., Dr., etc.
The default list will never be perfect and it can be modified to suit you.
Open the file /wp-content/plugins/speakout/includes/honorifics.txt and you will see a list of honorifics.
To make your own list you need to copy that file to /wp-content/plugins/speakout/custom/honorifics.txt. If that file exists it is used instead of the default file.
IMPORTANT: Each honorific is on its own line. They can be in your language in whichever order you choose.
Any files in the custom directory will remain untouched during updates, so your custom strings will be safe.
See also – how to edit the countries list