to decease
teleutao denotes dying or having died, whether as an event, an impending outcome, or a completed death.
The attested use consistently concerns death: people are said to have died, a slave is nearing death, a command stipulates death, and a worm is said not to die. The forms mark death as completed, impending, ongoing in a stated condition, or expressed in a command, without showing a separate lexical meaning.
Senses in use
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Dying, having died, or being subject to death · dominant
Completed death is shown by the aorist forms: in Acts 2:29 the APB renders David as having "died and was buried," and in Matthew 2:19 it renders the setting as "When Herod had died." The present forms extend the same use to a slave "about to die" in Luke 7:2, to the stipulated outcome for reviling parents in Mark 7:10, and to the worm that "does not die" in Mark 9:48.
In the Anselm Project Bible: Across the verses, the APB commonly uses "died" or "die," while it also expresses the present infinitive in Luke 7:2 as "about to die." These renderings confirm the clauses' death context rather than establish separate meanings.