Definition of Under lock and key

1. Adjective. (US UK idiomatic) imprisoned with little or no chance of escape. ¹

¹ Source:

Under Lock And Key Pictures

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Lexicographical Neighbors of Under Lock And Key

under a cloud
under a spell
under arms
under arrest
under attack(p)
under clothes
under consideration(p)
under control
under cover
under erasure
under fire
under fire(p)
under it
under lock and key (current term)
under no circumstance
under no circumstances
under one's belt
under one's breath
under one's feet
under one's hat
under one's nose
under one's own steam
under one's thumb
under one's wing
under par
under pressure
under protest
under sail

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