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Make Airtight

We've checked our database and believe the answer is SEAL which was last seen in the New York Times NYT crossword.
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We think the answer to this crossword clue is: SEAL

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LettersAnswerClue
99%4Exact Match!
noun

• fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters

• a member of a Naval Special Warfare unit who is trained for unconventional warfare

• a device incised to make an impression; used to secure a closing or to authenticate documents

• the pelt or fur (especially the underfur) of a seal

• a stamp affixed to a document (as to attest to its authenticity or to seal it)

• an indication of approved or superior status

• a finishing coat applied to exclude moisture

• fastener that provides a tight and perfect closure

• any of numerous marine mammals that come on shore to breed; chiefly of cold regions

verb

• make tight; secure against leakage

• close with or as if with a seal

• decide irrevocably

• affix a seal to

• cover with varnish

• hunt seals

98%6SEALUPExact Match!
No meanings yet for this word...
31%6 To make something airtight or watertight
No meanings yet for this word...

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Clue Last Found In...

Source #Number Answer
New York Times18 Nov 2025 Across 63
New York Times06 Oct 2024 Across 27
New York Times05 Aug 2018 Across 23 SEALUP
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