Thank you, my dear brother.

In the next dictionary update around the end of the month, it will include tons of plurals and possessives.

I have been dedicating some time to this task.

Thank you my dear brother,

If you have a list of missing words, please send them to me and I will try to add them in the next release.

Kind regards,

Yes, probably you aren't using it with the latest Firefox.

Remember that Mozilla converted all spellers to WebExtensions and now it requires Firefox 62 or 63 and above.

Only Firefox+Thunderbird 60.5 to be released on 29-JAN will support WebExtensions (60ESR).

Only Thunderbird still has a legacy extension, but after 60.5 is released I will upload only WebExtensions.

Hello!

Mozilla converted all dictionaries here to WebExtensions.

You must have the latest Firefox to be able to use them (V63 or above).

Then follow the instructions on my guide:
http://proofingtoolgui.org/en_installing.html

Hello!

Thank you for your comments.

GB also uses -IZE in most words according to the Oxford Dictionary (but there are exceptions).

As a premium account holder of the Oxford Dictionaries, I have access to more information regarding the words, where it states in -IZE words "also blah blah -ISE".

I wrote an example in the FAQ:
http://proofingtoolgui.org/faq.html#11

But pressing the link there will only show the full Oxford description to premium users, persons who are just visitors won't see it. Nothing I can do about it.

I believe that persons from Australia and Canada use -IZE and this speller can also be used by them.

I am planning to create a module for my Proofing Tool GUI tool to allow future AU+CA maintainers to create a list of words to add and to remove in/from the GB speller, so that they can create high quality spellers for their countries, based on mine (it is in my TO-DO list)... what I don't know is who would be interested in such a hard task.

My brother, kind regards!

I will continue working on the speller.

Hello!

Could you remove the speller and readd it?

There was a Thunderbird update that disabled the speller, not sure if it also happened with Firefox.

Also, notice that Mozilla (Firefox) automatically changed all the spellers add-ons to WebExtension.

This means, there are now two dictionaries:
1) Firefox: WebExtension;
2) Thunderbird: Legacy extension.

I believe that 1) won't probably work with older versions of Firefox.

If you have any issues reinstalling, please follow the guide:
http://proofingtoolgui.org/en_installing.html

If it doesn't solve the issue, please send me a private e-mail to try to see what happened.

Thanks!

EDIT: It is always a pleasure to help.

:-)