Lookup Definitions Online

Lookup free online dictionary and thesaurus sites for definitions.

Lookup Definitions Online - Quick Dictionary Access

"Lookup Definitions Online" is a Chrome extension designed to give users instant access to a wealth of knowledge from respected dictionaries such as Cambridge and Oxford. This tool caters to avid readers, writers, and language learners who frequently seek clear, authoritative word definitions and synonyms. Users can highlight a word and quickly search across multiple dictionaries like Collins English Dictionary or Online Etymology Dictionary. The extension is user-friendly, easily customizable, and supports adding new dictionaries upon request to the developer, making it an invaluable addition to any browser.
Install from Chrome Web Store

Extension stats

By: pMan
Users: 6,000+
Rating: 4.59
(85)
Version: 2.5 (Last updated: 2024-09-20)
Creation date: 2019-10-20
Risk impact: Moderate risk impact
Risk likelihood:
Manifest version: 3
Permissions:
  • contextMenus
  • storage
  • scripting
Host permissions:
  • <all_urls>
Size: 281.60K

Other platforms

Not available on Android
Not available on Firefox
Not available on Edge
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Extension summary

This extensions helps you easily lookup definitions of words in free online dictionaries/thesaurus.

Current version of the extension includes Cambridge Advanced Learner's dictionary, Oxford Advanced Learner's dictionary, Collins English Dictionary, Online Etymology Dictionary, and many more.

You may contact the developer if you wish to add a dictionary of your choice to this browser extension.

User reviews

These summaries are automatically generated weekly using AI based on recent user reviews. Chrome Web Store does not verify user reviews, so some user reviews may be inaccurate, spammy, or outdated.
Pros
  • Very useful for setting multiple dictionaries in the right-click lookup menu.
  • Easy to use and helps quickly find word definitions.
  • Allows users to select which dictionaries to access.
Cons
  • Some dictionaries, especially American English ones, do not work.
  • No option to open definitions in a new tab instead of a new window.
  • Lacks a search box for direct lookups.
Most mentioned
  • Request for howjsay.com to be added.
  • Issues with the Investopedia dictionary not working.
  • Desire for better user interface integration with Thesaurus.
User reviews
i use it to learn english, but it would be awesome if there was an option to just open definitions in a new tab instead of a new window
by Luan Santos, 2024-08-10

this is really nice, but for some reason after I change dictionaries the list stays the same, it would be great if you could choose one dictionary and a button for it would popup every time you double click the word
by An Chill, 2024-07-29

great extension, could you add howjsay.com to it please
by Modar Akayleh, 2021-11-06
View all user reviews

Extension safety

Risk impact

Lookup Definitions Online requires a few sensitive permissions. Exercise caution before installing.

Risk likelihood

Lookup Definitions Online has earned a good reputation and can be trusted.

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