Out of the 5 or so dictionary addons I've tried, this seems to be the best successor to Dictionary Anywhere. While it doesn't do as well on foreign words (i.e. dakimakura or 抱き枕), that technically falls more under translation so it's not an issue for me.

Does what it says on the tin and then some, excellent successor to the one that went defunct.

I used to use Dictionary Anywhere to double-click on a word to get a popup definition but it stopped working for reasons unknown. I finally found Dictionary Plus and it works beautifully. It's fast and shows a lot of info. Works for me!

Small, straightforward and fast. Recommended since firefox recommended dictionary is no longer working.

Best

Best dictionary add-on, similar to Google Dictionary in Chrome.

Best dictionary add-on. Shows phonetics, and saving words is a nice to have feature.