English version

lock in

From Longman Dictionary of Contemporary Englishlock in phrasal verb1 KEEP somebody IN A PLACE lock somebody in (something) to prevent someone from leaving a room or building by locking the door She locked herself in. They locked the director in his office.2 lock something ↔ in to do something so that a price, offer, agreement etc cannot be changed Sell your stocks now to lock in some of the gains of recent months.3 lock something ↔ in to make the taste, liquid etc remain in something This method of cooking locks in the flavour of the meat. lock→ See Verb table
Examples from the Corpus
lock inSome families are locked in a cycle of poverty.
From Longman Business Dictionarylock in phrasal verb1[transitive] lock something → inFINANCE to gain something and be certain to keep itInvestors can lock in an 8.4% yield on a 30-year Treasury Bond.Venezuela is seeking to lock in buyers for its oil.2[intransitive] to come to a firm agreement that will last for some time and cannot be brokenMany homeowners are keen to lock in at current low interest rates. lock→ See Verb table
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Verb table
lock
Simple Form
Present
I, you, we, theylock
he, she, itlocks
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Past
I, you, he, she, it, we, theylocked
Present perfect
I, you, we, theyhave locked
he, she, ithas locked
Past perfect
I, you, he, she, it, we, theyhad locked
Future
I, you, he, she, it, we, theywill lock
Future perfect
I, you, he, she, it, we, theywill have locked
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Continuous Form
Present
Iam locking
he, she, itis locking
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you, we, theyare locking
Past
I, he, she, itwas locking
you, we, theywere locking
Present perfect
I, you, we, theyhave been locking
he, she, ithas been locking
Past perfect
I, you, he, she, it, we, theyhad been locking
Future
I, you, he, she, it, we, theywill be locking
Future perfect
I, you, he, she, it, we, theywill have been locking
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