When a woman says to her boyfriend "marry me or I am leaving you," this is an example of an ultimatum.
Origin of ultimatumModern Latin ; from LL, neuter of ultimatus: see ultimate
nounpl. ul·ti·ma·tums or ul·ti·ma·ta
Origin of ultimatumNew Latin, from neuter of Latin ultimatus, last; see ultimate.
(plural ultimatums or ultimata)
ultimatum - Legal Definition