英語蟞曞・英和蟞兞・翻蚳 - 英蟞郎 on the WEB

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4.38K reviews
Content rating
Teen
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Content rating
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About this app

◆Includes over 2.39 million English-Japanese entries! An English dictionary and Japanese-English translation app loved by professionals◆
◇From English-Japanese and Japanese-English to example sentence search, "Eijiro on the WEB" solves it all in one app◇
◆Suitable for a wide range of learners, from beginners to advanced, from self-study of English to business English writing◆
◇Register for a free account and use the "English Vocabulary List" that can be synchronized with the web browser version◇

"Eijiro on the WEB" is recommended for those looking for an English learning app like this! /
* For those who want to look up not only the meaning of a word, but also entire "example sentences" and "phrases" in their usage.
* For those who want to use a full-fledged English-Japanese/Japanese-English dictionary for TOEIC®, Eiken, TOEFL®, and other qualification preparation.
* For those who want to efficiently acquire natural expressions that can be used for overseas travel, studying abroad, and business English conversations.
* For those who regularly create and translate English emails and contracts for work.
* For those who want to compare various similar expressions in a list and choose the most suitable English word.
* For those who want to learn English listening comprehension or practice pronunciation using audio.

[Main Features of "Eijiro on the WEB"]
■ Powerful search function for everything from practical use to self-study!
In addition to English-Japanese and Japanese-English searches, mixed English and Japanese searches are also possible. You can search using a variety of conditions, including exact match, AND/OR search, and inflection search.

■ "English Vocabulary List" that synchronizes with the web browser version
By registering an account (free or paid), you can register the English words, phrases, and Japanese translations you have looked up in your vocabulary list. You can create your own personalized vocabulary list by sorting and tagging. Because it syncs with the browser version, you can learn seamlessly at home or on the go.

■ Audio Playback Function for Search Terms
In addition to checking pronunciation symbols, you can play the audio of selected text. Ideal for self-study pronunciation practice and listening comprehension.
*Because it uses synthesized speech generated by the OS, the actual pronunciation may differ.


[What you can do with "Eijiro on the WEB Pro Lite" (available with a free account)]
■ Register up to 100 English words in your vocabulary list
■ Save up to 10 search history entries
■ Search from over 210,000 English example sentences

[What you can do with "Eijiro on the WEB Pro" (available with a paid account)]
■ No ads
■ Register up to 20,000 English words in your vocabulary list
■ Save up to 50 search history entries
■ Search from over 1,490,000 English example sentences

*First-time subscribers to the latest version can use it for free for 2 weeks after purchase. You can cancel your subscription during the free period.
*The following two courses are available for in-app purchase. These are the prices for subscriptions.
Monthly course: 550 yen (tax included) / month
Annual course: 5,500 yen (tax included) / year
* "Eijiro on the WEB Pro" can also be purchased from the web browser version. * This service will be automatically recurring and charged to your Google account.
* For information on canceling or changing your subscription, please refer to "Google Play Help."
https://support.google.com/googleplay/answer/7018481
* We do not accept cancellations for the current month of service use.
* You must agree to the "Terms of Service" to use this service.
* An internet connection is required to use this service. Dictionary data is not included.

[Frequently Asked Questions]

Q: What kind of app is "Eijiro on the WEB"?
A: It's a full-fledged English dictionary and translation app that allows you to create your own English vocabulary list in addition to English-Japanese and Japanese-English searches referencing data from 2.39 million English-Japanese entries and 2.72 million Japanese-English entries.

Q: Can it be used for Japanese-English translation?
A: Yes. In addition to translating from Japanese to English, you can find the most appropriate expression for the context from over 2.39 million entries and abundant example sentences.


Q: Can it be used for Japanese-English translation?
A: Yes. *Example sentence search is available with account registration (free or paid).

Q: How can I use the English vocabulary list?
A: You can save the words you look up in the app's vocabulary list, and it automatically syncs with the web browser version, making it ideal for studying during spare time.

Q: Can even English beginners use it?
A: Yes. It caters to a wide range of learners, from beginners to advanced, and you can search entire phrases and example sentences, providing strong support for self-study of English.

* "Eijiro" is a registered trademark of Sachiko Michibata.
* Operation on Android versions below 10 is not guaranteed or supported.
* For inquiries regarding this app and the web service "Eijiro on the WEB," please contact ALC Co., Ltd.
Search English words and phrases from millions of entries in your database! Ideal for business and English learning.
Updated on
Aug 19, 2026

Data safety

Safety starts with understanding how developers collect and share your data. Data privacy and security practices may vary based on your use, region, and age. The developer provided this information and may update it over time.
  • This app may share these data types with third parties
    App info and performance
  • This app may collect these data types
    Personal info, App activity and 2 others
  • Data is encrypted in transit
  • You can request that data be deleted

Ratings and reviews

4.14K reviews
Tomoko Takeda
September 4, 2026
I use practical examples for subtle nuance and effective uses, and pronunciation function.
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Daniel Carter
October 16, 2021
I've used this service for a long time, and really appreciate it. Unfortunately, the app has recently had an insane amount of ads added to it - nearly half the screen is taken up with them, and sometimes full screen ads that are difficult to close are shown. I understand that it's a free app and that ads are necessary, but there has to be a reasonable limit. At this point I'd rather not use the service, in favour of others like weblio.
10 people found this review helpful
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RYO ISHII
May 12, 2026
It’s hard to use with one hand. The input field is in the middle at first, but when I tap on it, it moves upward, making it impossible for me to type with my thumb.
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