The final offer in negotiating an agreement, carrying with it the implication that if it is not accepted, bargaining will cease.
The definition of an ultimatum is a demand which, if not met, will end a relationship or otherwise result in some serious consequence.
When a woman says to her boyfriend "marry me or I am leaving you," this is an example of an ultimatum.
A final offer or demand made by one party to another, especially in diplomatic negotiations, expressing or implying the threat of serious consequences or the breakoff of relations if the terms are not accepted.
A final offer or demand, esp. by one of the parties engaged in negotiations, the rejection of which usually leads to a break in relations and unilateral action, the use of force, etc. by the party issuing the ultimatum.
New Latin from neuter of Latin ultimātuslastultimate
American Heritage Dictionary of the English Language, 5th Edition
From Latinultimatus (“late, last final"), from Latinultimus (“extreme, last, furthest, farthest, final")
Ultimatum Sentence Examples
That's because Josh gave her an ultimatum... him or the goats.
In August an ultimatum was received from Chile demanding arbitration.
A part of the Afghan force was encamped on the west bank of the Kushk, and on the 29th of March General Komarov sent an ultimatum demanding their withdrawal.
Rumours of this gigantic scheme reached Constantinople, and as Catherine's menacing attitude left little doubt as to her aggressive intentions the Porte presented an ultimatum and finally declared war (1787).
An ultimatum was presented ordering Turkey within twenty-four hours to dismiss the French ambassador, hand over the Turkish fleet, and make peace with Russia.