replace

Is your pen not working? Maybe you need to replace it. To replace is to substitute one thing for another — in this case, to get a new pen and throw the old one away.

When you see the word place in it, replace makes sense: replacing is putting something new in place of something old. We need to replace most things at some point: light bulbs burn out and batteries run out, while computers, cars, and socks wear out. When something stops working or is just worn out and old, it might be time to replace it. It's natural to worry that your boss might want to replace you — i.e., fire you and hire someone else. Some things in life cannot be replaced, like a winning lottery ticket or a friend.

Definitions of replace
  1. verb
    put something back where it belongs
    replace the book on the shelf after you have finished reading it”
    synonyms: put back
    supercede, supersede, supervene upon, supplant
    take the place or move into the position of
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    types:
    hang up
    put a telephone receiver back in its cradle
    type of:
    lay, place, pose, position, put, set
    put into a certain place or abstract location
  2. verb
    put in the place of another; switch seemingly equivalent items
    “the con artist replaced the original with a fake Rembrandt”
    synonyms: exchange, interchange, substitute
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    types:
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    shift
    move and exchange for another
    reduce, simplify
    simplify the form of a mathematical equation of expression by substituting one term for another
    truncate
    replace a corner by a plane
    retool
    provide (a workshop or factory) with new tools
    subrogate
    substitute one creditor for another, as in the case where an insurance company sues the person who caused an accident for the insured
    type of:
    alter, change, modify
    cause to change; make different; cause a transformation
  3. verb
    take the place or move into the position of
    “Smith replaced Miller as CEO after Miller left”
    “Mary replaced Susan as the team's captain and the highest-ranked player in the school”
    synonyms: supercede, supersede, supervene upon, supplant
    put back
    put something back where it belongs
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    deputise, deputize, step in, substitute
    act as a substitute
    displace, preempt
    take the place of or have precedence over
    usurp
    take the place of
    oust
    remove and replace
    cover
    help out by taking someone's place and temporarily assuming his responsibilities
    type of:
    come after, follow, succeed
    be the successor (of)
  4. verb
    substitute a person or thing for (another that is broken or inefficient or lost or no longer working or yielding what is expected)
    “He replaced the old razor blade”
    “We need to replace the secretary that left a month ago”
    “the insurance will replace the lost income”
    “This antique vase can never be replaced
    Synonyms:
    supercede, supersede, supervene upon, supplant
    take the place or move into the position of
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    types:
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    change, commute, convert, exchange
    exchange or replace with another, usually of the same kind or category
    change
    remove or replace the coverings of
    novate
    replace with something new, especially an old obligation by a new one
    rectify
    convert into direct current
    utilize
    convert (from an investment trust to a unit trust)
    capitalise, capitalize
    convert (a company's reserve funds) into capital
    launder
    convert illegally obtained funds into legal ones
    break
    exchange for smaller units of money
    type of:
    regenerate, renew
    reestablish on a new, usually improved, basis or make new or like new
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