
IdiomDaily Life
English
under lock and key
Meaning: Securely locked away.
Example: “The family recipes are kept under lock and key.”
Origin: A plain pairing of the lock and the key that opens it, found in English from the Middle Ages.
Equivalents in other languages
Dutch: achter slot en grendel Literally: Behind lock and bolt
More English idioms
- all in one's head Imagined rather than real, or a matter of attitude.
- stink to high heaven To smell terrible; also, to seem very dishonest.
- on a silver platter Given to someone without any effort on their part.
- dig one's heels in To refuse stubbornly to change one's mind.
- the scales fall from one's eyes To suddenly see the truth after being deceived.
- feet of clay A hidden weakness in someone or something admired.
Explore another collection: Compliments & Insults
Compliments and insults from around the world, from the sweet to the savage.
- Du hast Köpfchen You're sharp and clever — you use your brain well.
- Du bist klasse You're brilliant — excellent, impressive, top-notch.
- 気が利く (ki ga kiku) You're perceptive and considerately thoughtful — you notice what people need before they…
Keep exploring