Update: Firefox was restarted, but only after new installation it started to work. So far so good, perhaps missing some useful twerks like pop-up option or right click context menu. But it works, I appreciate the feedback and I will certainly give it a try.


A great idea for an extension, unfortunately it does not work (anymore?)

Highlight a word and click the extension icon and voila: synonyms.
(Suggestion/wish: It would be easier to use with a right click context menu option.)