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Ultimatum vs Deadline - What's the difference?

ultimatum | deadline |

As nouns the difference between ultimatum and deadline

is that ultimatum is ultimatum while deadline is a date on or before which something must be completed.

As a verb deadline is

(military) to render an item non-mission-capable; to ground an aircraft, etc.

ultimatum

English

Noun

(en-noun)
  • a final statement of terms or conditions made by one party to another, especially one that expresses a threat of reprisal or war

    • Related terms

    * ulterior * ultimate * ultra * ultra-

    See also

    * ("ultimatum" on Wikipedia) ----

    deadline

    English

    (wikipedia deadline)

    Noun

    (en noun)
  • A date on or before which something must be completed.
    • I must make this deadline or my boss will ''kill'' me!
  • (archaic) A guideline marked on a plate for a printing press.
  • (archaic) A line that does not move. (rfex)
  • (archaic) A boundary around a prison, prisoners crossing which would be shot.

    • Verb

    (deadlin)
  • (military) To render an item non-mission-capable; to ground an aircraft, etc.
    • ----