English / phrase
Under Lock and Key
MEANING IN ENGLISH
Safely locked away in a secure vault, box, or room to prevent unauthorized access or theft.
In context
01
Hotel management strongly advises guests to store their passports and cash under lock and key in the bedroom safe.
02
The master keys and confidential guest registration ledgers are kept under lock and key in the manager's office.
Synonyms
locked up,secured,safely stored
Antonyms
unlocked,accessible,exposed
Collocations
keep under lock and key,stored under lock and key,secured under lock and key