Thank you, this was the only thing I missed after switching back from Chrome to Firefox.

Does what it says!

Works great.
However, you should add a style rule for black text color, as the popup currently uses the text color of the website. Difficult to read if the text is gray (eg. Reddit night mode)

Thank you for making this extension. It works just fine in place of the Google Dictionary extension that I miss so much when I switched over to Firefox.
There are some things that I wish you could improve on, however, such as a fix for when the definition bubble pop-ups stick to one side of the screen (or even show up outside of your device's screen, especially on devices that have smaller screens) as well as a when double clicking on a word in the pop-up bubble that creates a new bubble on the edge of the previous one instead of on top of it.
I also have a feature request that would be awesome if you could include, which is the ability for users to set a hot-key (keyboard combination shortcut) for opening up the dictionary.
But still, even if these don't get added anytime soon, I'd still like to thank you for making this extension!

Found your Reddit post because I too missed the popup dictionary extension. This is exactly what I was looking for. Thanks for developing!

I was looking for something similar to the Google popup dictionary on Chrome for Firefox Quantum and this extension was the perfect replacement.
Double click to find the meaning of words is super convenient and the results are returned very quick.

Easy to use, Clean to look at and relevant results.

Great addon thanks :)

Only issue is sometimes on webpages with dark backgrounds the text of the popup will be clear on a clear background and it will be impossible or hard to read.

Works quite well though I'm still searching for other extensions to compare.

works great and makes it easy to quickly understand a word

Thank you very much. This is the most important addon in the world. It's easy and you can use it anywhere except in pdf. I hope the next project is to make this addon to be able to do his job in pdf that open in browser. You are the great man, thank you very much.

Wonderful, Most needed. Loved it. Perfectly works as it says. Thank you.

Simple and cool!

Just does what it says

Well done! One of the only missing pieces for making the jump to FF Quantum. Try to make it easier to find within the add-ons manager, I found it in a reddit post by googling.

I have been waiting months for FF to add an Extension/Add-On (that you can use with version FF 58+/Legacy) that gives you the definition of a word in a pop-up since their big change . Thank you so much for finally developing this. Huge thanks to krv5vignesh

Thanks!