Look up any selected text in Merriam-Webster Dictionary & Thesaurus with this versatile and easy-to-use add-on in a pop-up window. No permissions required.
- By:
- cubone
- Daily users:
- 157 -1
- Rating:
- 4.20 (5)
- Version:
- 1.1 Last updated: 2024-03-10
- Version code:
- 5703807
- Creation date:
- 2021-08-07
- Risk:
- Very low risk impact Low risk likelihood
- Permissions:
- activeTab
- contextMenus
- activeTab
- Size:
- 36.18KB
- Full description:
- See detailed description
- Source:
- Firefox Browser Add-ons
- Updated:
- 13 hours ago
User reviews
by 全民*****, 2025-03-31
by 退出*****, 2025-02-26
Used to be great, now simply does not work.
by Um*****, 2024-09-08
Extension safety
Risk impact
Risk impact measures the level of extra permissions an extension has access to. A low risk
impact extension cannot do much harms, whereas a high risk impact extension can do a lot of
damage like stealing your password, bypassing your security settings, and accessing your
personal data. High risk impact extensions are not necessarily malicious. However, if they
do turn malicious, they can be very harmful.
Search in Merriam-Webster does not require any sensitive permissions.
Risk impact analysis details
Risk likelihood
Risk likelihood measures the probability that a Firefox add-on may turn malicious.
This is determined by the publisher and the Firefox add-on reputation on
Firefox Browser Add-ons, the amount of time the Firefox add-on has been
around, and other signals about the
Firefox add-on. Our algorithms are not perfect, and are subject to change
as we discover new ways to detect malicious extensions. We recommend that you always
exercise caution when installing a Firefox add-on.
Search in Merriam-Webster has earned a fairly good reputation and likely can be trusted.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
- Low **** ********* *** ******* **** **** * ****** **** ***** ******** *** **** ****** ** ** ****** *** *****
- Low **** ********* *** ***** **** **** * ****** **** ***** ********** *** **** ****** ** ** ****** *** *****
- Good **** ********* *** **** **** *******
Upgrade to see full risk analysis details
Compare add-ons
- Compare Search in Merriam-Webster vs Look up in Merriam-Webster Ⓡ
- Compare Search in Merriam-Webster vs Wiktionary Lookup
- Compare Search in Merriam-Webster vs Merriam-Webster's Learner's Dictionary
Similar add-ons
Here are some Firefox add-ons that are similar to Search in Merriam-Webster:

Look up in Merriam-Webster Ⓡ
ivo-yordanov

Wiktionary Lookup
Mukul Mahajan Singraur

Merriam-Webster's Learner's Dictionary
Victor

TheFreeDictionary.com Lookup
polizz

English Dictionary Anywhere - Definition PopUp
TheUnderdogCoder

Merriam's Webpage
April Roszkowski

Cambridge Dictionary
fabiob

Cambridge English Dictionary
Vin

Grammar Wise & Custom Web Search
Grammar Wise
Popular extensions / apps
Here are some popular extensions / apps that you might be interested in:
MaxAI: Ask AI anything as you browse (GPT, Gemini, Claude, Grok, etc.)
https://maxai.co
Pinterest
Pinterest
QuillBot: AI Writing and Grammar Checker Tool
https://quillbot.com/
Adobe Scan AI PDF Scanner, OCR
Adobe
vidIQ Vision for YouTube
http://vidiq.com/
Coupert - Automatic Coupon Finder & Cashback
https://www.coupert.com/
Phone by Google
Google LLC
Mercado Pago: cuenta digital
Mercado Libre
Global Speed
polywock
Sider: Chat with all AI models (DeepSeek, Gemini, Claude, etc.)
Vidline Inc.
Adobe Acrobat: PDF edit, convert, sign tools
https://www.adobe.com/
Duolingo: Language Lessons
Duolingo