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Synonyms

sealed

British  
/ siːld /

verb

  1. the past participle of seal 1

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

adjective

  1. (of a road) having a hard surface; made-up

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Explanation

Anything that's sealed is securely — maybe even permanently — closed or unavailable. An ancient sealed tomb may be safe from curious explorers or grave robbers. A sealed bottle of medicine is tightly shut, not even allowing air inside. A sealed document might be physically closed, like a sealed envelope that's pasted shut, or just unavailable for anyone without special permission to look at. When a promise or vow is sealed, it's officially established or decided: "Their sealed promise meant that neither of them could ever mention the secret club."

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Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Not only did they generate it, they also isolated it, sealed it in a tube, and observed it staying intact for months.

From Science Daily • Apr. 11, 2026

California law requires county officials to keep election materials sealed for 22 months for elections involving a federal office and for six months for all other contests.

From Los Angeles Times • Apr. 8, 2026

The doors of the truck were sealed with red evidence tape.

From The Wall Street Journal • Apr. 5, 2026

At Isfahan, for example, satellite imagery from February indicated all entrances to its tunnel complex appeared to be sealed off with earth, which would make any operation more difficult.

From BBC • Mar. 31, 2026

That bullet point about the window had sealed that for me.

From "Glitch" by Laura Martin