keep one's lips sealed
To keep quiet; to keep a secret; to not tell.
You can certainly trust me to keep my lips sealed about the matter.
sealed
/siːld/
adj 4
Collocations
5ADJ.
huge, last, notarial
The lawyer handed me the huge sealed envelope containing all the legal documents.
VERB + SEALED
box, boxes, found, handed, keep, kept, police, silence
My grandmother kept the important documents in a sealed box under her bed.
SEALED + NOUN
deeds, envelope, fate, prisoner's, room, streets, stu, they're
The prisoner's fate was sealed the moment the jury returned with their guilty verdict.
PREP.
in, in, off, out
The envelope was sealed with a piece of tape before being mailed.
ADV.
immediately
The envelope was sealed immediately after she signed the contract.
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