What is another word for seal?

Need synonyms for seal? Here's a list of words from our thesaurus that you can use instead.

Noun
A piece of wax, lead, or other material with an individual design stamped into it, attached to a document as a guarantee of authenticity
“The seal was usually impressed on red wax, but was occasionally seen imprinted on a wafer stuck to the instrument with soft wax.”
Noun
A device or substance that is used to join two things together so as to prevent them from coming apart or to prevent anything from passing between them
“Your dentist will put a rubber seal around your teeth to protect your gums.”
Noun
Something that serves as an official confirmation of approval
“The President's seal of approval.”
Noun
A tight closure, secure against leakage
Verb
To finalize or authorize
“At 2-0 up after 52 minutes, they should have kicked-on to finish off Borough and virtually seal their place in the premier division next season.”
Verb
Fasten or close securely
“The viral solutions would survive the UV lights only because he would seal the syringes in an opaque biohazard container before leaving.”
Verb
Isolate an area by preventing or monitoring access to and from it
“Just weeks after they had restocked, their farm is sealed off again and their fate - and that of the entire rural community - is being determined by scientists at a Government laboratory.”
Verb
Make airtight
“A woman picks them up and seals them in plastic bags.”
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