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lock in - definition and synonyms


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90% of the time, speakers of English use just 7,500 words in speech and writing. These words appear in red, and are graded with stars. One-star words are frequent, two-star words are more frequent, and three-star words are the most frequent.



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phrasal verb [transitive]
Word Forms
present tense
I/you/we/theylock in
he/she/itlocks in
present participlelocking in
past tenselocked in
past participlelocked in
  1. 1
    to put someone in a room and lock the door so they cannot leave

    You can’t keep me locked in.

    She went to her hotel room and locked herself in.

  2. 2
    lock in profits/gains etc. business to get a financial benefit that continues for a long time, for example by selling stocks that have gone up in value before they can go back down
See also main entry: lock

sea lion

in an online conversation, repeatedly asking a person questions which suggest that you are interested in what they are talking about, but are actually intended to annoy them

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