(verb) have an existence, be extant. Synonyms: be. Examples: "Is there a god?."
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Verb Definition 1
(verb) support oneself. Synonyms: survive, live, subsist. Examples: "He could barely exist on such a low wage." "Can you live on $2000 a month in new york city?." "Many people in the world have to subsist on $1 a day."