seal up
To close something so tightly that nothing can get in or out
Meanings
To close a container, package, or opening completely and securely
"She sealed up the envelope and left it on his desk."
To fill or cover gaps, cracks, or holes in a structure to make it airtight, watertight, or weatherproof
"They sealed up the cracks around the windows before winter to stop the draughts."
(Figurative) To suppress or lock away emotions, memories, or feelings
"After the divorce, he sealed up all his grief and threw himself into work."
Used for practical tasks like sealing envelopes, packaging, gaps in windows, or buildings. 'Up' emphasises completeness. Also used figuratively for closing off emotions or memories.
Commonly used with
Forms
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Synonyms
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