Existence is the state of being alive or being real. For example, you and your best friend disagree about the existence of Bigfoot if you think it's real and your friend doesn't.

The noun existence can be used many different ways, but it always has to do with being alive or with simply "being". You can talk about the survival of something as its existence, like your yo-yo club having lost so many members that its existence is in danger. The particular way you live is another meaning of existence; if you live a quiet, lonely life in the country, you could describe it as a solitary existence.

Definitions of existence
  1. noun
    the state or fact of existing
    “laws in existence for centuries”
    synonyms: being, beingness
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    the state of not being
    nonentity, nonexistence
    the state of not existing
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    the state of actually existing objectively
    eternity, timeless existence, timelessness
    a state of eternal existence believed in some religions to characterize the afterlife
    existing in a former state or previous to something else
    existing peacefully together
    the state of existing in reality; having substance
    the state of being present; current existence
    the course of existence of an individual; the actions and events that occur in living
    aliveness, animation, life, living
    the condition of living or the state of being alive
    a characteristic state or mode of living
    transcendence, transcendency
    a state of being or existence above and beyond the limits of material experience
    possibility, possibleness
    capability of existing or happening or being true
    (Aristotle) the state of something that is fully realized; actuality as opposed to potentiality
    the state of being genuine
    realism, reality, realness
    the state of being actual or real
    the state of the world as it really is rather than as you might want it to be
    the true, trueness, truth, verity
    conformity to reality or actuality
    eternal life, life eternal
    life without beginning or end
    immanence, immanency
    the state of being within or not going beyond a given domain
    inherence, inherency
    the state of inhering; the state of being a fixed characteristic
    the state of existing and being localized in space
    omnipresence, ubiquitousness, ubiquity
    the state of being everywhere at once (or seeming to be everywhere at once)
    the state of being here in this place
    the state of being there--not here--in position
    real existence
    an instance of something occurring
    a dominating and pervasive presence
    a person's skin regarded as their life
    endurance, survival
    a state of surviving; remaining alive
    any segregated mode of living or working that results from bias or stereotyping
    conceivability, conceivableness
    the state of being conceivable
    achievability, attainability, attainableness
    the state of being achievable
    potency, potential, potentiality
    the inherent capacity for coming into being
    chance, opportunity
    a possibility due to a favorable combination of circumstances
    type of:
    the way something is with respect to its main attributes
  2. noun
    everything that exists anywhere
    “the biggest tree in existence
    synonyms: cosmos, creation, macrocosm, universe, world
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    closed universe
    (cosmology) a universe that is spatially closed and in which there is sufficient matter to halt the expansion that began with the big bang; the visible matter is only 10 percent of the matter required for closure but there may be large amounts of dark matter
    natural order
    the physical universe considered as an orderly system subject to natural (not human or supernatural) laws
    environment, nature
    the natural physical world including plants and animals and landscapes etc.
    type of:
    natural object
    an object occurring naturally; not made by man
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