The most comprehensive universal, multilingual, and monolingual dictionaries—perfect for e-readers, phones, tablets, and desktop apps. Powered by Wiktionary. Updates at least twice a month and support for over 180 languages.
No matter what you read—literature, science, or poetry—our dictionaries provide deeper understanding with advanced features like smart word forms and comprehensive language support, far beyond standard built-ins.
Multiple grammatical forms shown together
When a word is both a plural form and a verb form, all relevant versions are displayed.
Singular forms from plurals
When selecting a plural word, its singular form is displayed.
Infinitive forms from conjugated verbs
When selecting a conjugated verb, the infinitive form is shown.
Optimized rendering for scientific content
Mathematical, and chemical, formulas are beautifully rendered.
Tables support
When a word entry includes any table, they are displayed correctly.
Extra Capabilities
Discover unique tools and advanced options that take your dictionary experience even further—perfect for power users and curious readers who want more than the basics.
Redirects are supported
Conjugated forms and variant spellings are redirected to their correct base entries — even when multiple levels deep.
Multiple genders and pronunciations
If a word has more than one pronunciation or grammatical gender, all are displayed clearly.
Hieroglyphs are supported
Ancient Egyptian characters are fully rendered when present in etymologies or word origins.
Etymology-free versions
Dictionaries are available in two flavors: one including etymologies, and one without — perfect for readers who want depth over clarity.
See It in Action
Our dictionaries work with a wide range of e-readers, tablets, and phones. The look and features depend on your device and app.
One Price. Unlimited Dictionary Access.
Select your languages, pay a one-time fee, and get unlimited access to evolving dictionaries with updates at least twice a month.
On Kindle devices, this dictionary can only be used via the KOReader app due to technical limitations.
Lifetime Access
Instant download & lifetime updates—your dictionary will always improve, at no extra cost!
See what savvy readers across platforms are saying about our dictionaries. Share your experience →
I found reader.dict at the start of my Spanish-learning journey while searching for improvements over the pre-installed Spanish dictionaries on my Kindle and Kobo e-readers; although e-readers offer tremendous convenience, their dictionaries don't work well with conjugated verbs or lesser-known nouns. I found the reader.dict dictionaries to be an essential aid to my foreign language learning. They are easy to install and make the reading process smoother, faster, and, ultimately, more enjoyable.
Kindle, Kobo, PocketBook, Vivlio, Onyx Boox, Bookeen Cybook, KOReader, GoldenDict, Plato, ColorDict, FlowDict, and more. Our dictionaries work with virtually every major e-reader and dictionary app.
Contact us! We’re always expanding compatibility and can offer advice for new or niche devices.
Can I get a refund?
Risk-free: full refund if you haven’t downloaded any files. Just reach out and we’ll assist you quickly.
How often are dictionaries updated?
All dictionaries are updated twice a month—and even faster if you need it! If you find a dictionary isn’t working perfectly for your device or language pair, let us know. We’ll investigate, fix, and update the files quickly—often within days—so you always have the best possible experience. Your feedback helps us improve for everyone! All purchases include lifetime updates.
Why is the price the same for all dictionaries, regardless of size?
We offer a simple, one-time price for each dictionary, no matter its current size. When you purchase, you receive lifetime access to all future updates and improvements for that dictionary. This means your dictionary may start small or large, but as we add new words, definitions, and features, you'll always have the latest version at no extra cost.
Yes, we accept payments, and donations, in crypto.
Process for Monero (XMR):
Amount of XMR tokens to send ():
Binlingual dictionary: -.--- XMR
Universal dictionary -.--- XMR
Bidirectional bundle: -.--- XMR
Ultimate bundle: -.--- XMR
Sent the proper amount of XMR to 4831...a2AT; or copy the address: 4831e8JzHurHUqNWAGShhJXcmZF3VfSvrgLZ3zXGrwTYgkvj68XBceCG96mLhL14F96nnmJs8iXcVXm8Jj6FAKNJ3XUa2AT
Email us the transaction ID with the desired dictionary.
