Mouse Dictionary

Blazing fast dictionary for language learners

Chrome Firefox

(The new beta version supports Japanese-English!)

Blazing fast

Show definitions easily and instantly

Phrase detection

Detect phrases in text intelligently

Any dictionary data

You can import your own dictionary data

Customizable

Customizable display and behavior

Usage example

Getting started

Prepare your dictionary

Advanced features

Shortcut key, maneuver the window, customize the display, use in PDF