Dead to the world
Meaning
Completely unconscious or unresponsive, especially while sleeping.
Usage
Used humorously when someone sleeps soundly or ignores chaos.
Origin & History
Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.
Biblical language about spiritual unawareness.
Used in literature since the 18th century.