Looks up the selected word/phrase in Merriam-Webster Ⓡ (www.merriam-webster.com) dictionary. This is NOT an official add-on developed and distributed by Merriam-Webster Ⓡ!

Look up in Merriam-Webster Ⓡ Firefox Add-on
Look up in Merriam-Webster Ⓡ is a Firefox add-on that enables users to easily search for definitions of selected words or phrases on www.merriam-webster.com. This unofficial add-on opens a new tab displaying the word/phrase definition for quick reference.
Add-on stats
Manifest V2
Firefox on Android: No
Permissions:
- contextMenus
Size: 8.95K
Full description: See detailed description
Ranking
Other platforms
Not available on Chrome
Not available on Android
Not available on Edge
User reviews
by 敬念法轮大法好远离疫情, 2025-03-10
Very handy! No need to right-click. Long explanation displayed close to the word.
by Tom Hummel, 2022-01-18
Add-on safety
Risk impact
Look up in Merriam-Webster Ⓡ does not require any sensitive permissions.
Risk impact analysis details
- Low Request access to the following domains:
Risk likelihood
We don't have sufficient data to confidently determine the risk likelihood of Look up in Merriam-Webster Ⓡ. Use it at your own risk.
Risk likelihood analysis details
- High This extension has low user count. Unpopular extensions may not be stable or safe.
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