lock in
To fix something firmly so it cannot be changed, or to trap someone inside a locked place.
Meanings
To secure a fixed price, rate, or agreement that cannot be changed later.
"You should lock in that mortgage rate before it goes up again."
To confine someone in a locked space so they cannot leave.
"He accidentally locked himself in the shed and had to wait an hour to be let out."
To commit a customer or partner to a long-term contract or relationship, making it difficult to leave.
"The subscription service was designed to lock users in through penalty fees for early cancellation."
Very common in finance (locking in an interest rate), business (locking in a customer), and sports commentary (locking in a position). The physical sense (trapping someone) is less common.
Commonly used with
Forms
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Synonyms
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