how to display the thumbnail to in the "keywords list"

Hi Joe

sorry for the delay
do you mean that you want to show the thumbnail on the glossary list ?

Yes.
My English I’m sorry the poor.

I in the glossary, I would like to show the post thumbnail.

Ok
for Tooltipy v3.3
On the file glossary-shortcode.php
change the line 190 :

<div class="kttg_glossary_element_content">'.get_the_content().'</div>

By this one :

<div class="kttg_glossary_element_content"><div>'.get_the_post_thumbnail().'</div>'.get_the_content().'</div>

Wait Joe!

Now a new setting in the glossary settings provide you the desired option, so just upgrade to v3.3.1

and have fun ??

You’re so great!
thank you so much!

It is with pleasure Joe ??