View synonyms for redline


or red-line

[ verb red-lahyn; noun red-lahyn ]

verb (used with object)

, red·lined, red·lin·ing.
  1. to treat by redlining (an area or neighborhood).
  2. to establish the recommended safe speed of (an airplane):

    The bomber is redlined at 650 miles an hour.

  3. to draw a canceling red line through (an item on a list).
  4. to mark or designate for cancellation, rejection, dismissal, or the like:

    club members redlined for unpaid dues.

  5. to cause (an airplane) to be grounded.

verb (used without object)

, red·lined, red·lin·ing.
  1. to engage in redlining.


  1. Automotive.
    1. the maximum rotational speed, or angular velocity, of the engine crankshaft that is considered safe: often measured in rpm.
    2. a red line or boundary of a red area that delineates such a value, as on a tachometer.


/ ˈrɛdˌlaɪn /


  1. (esp of a bank or group of banks) to refuse a loan to (a person or country) because of the presumed risks involved
  2. to restrict people's access to goods or services on the basis of the area in which they live

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Other Words From

  • redliner noun

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Word History and Origins

Origin of redline1

First recorded in 1940–45; red 1 + line 1

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Example Sentences

Yes, there are bikes that more readily give up more of their travel, especially for riders who aren’t pushing the redline on every descent, but they compromise some quickness and agility.

Our legal team made one change on redline and added our company name.

From Fortune

Walker gained a love of car racing from starring in the films, racing cars in the Redline Time Attack racing series.





red-light districtredlining