What is the grammatically accurate word or short phrase to describe a thing that has neither a beginning nor an end? Not looking for metaphors here.

closed as off-topic by sumelic, tchrist, choster, Nathaniel, JHCL Nov 26 '15 at 7:24

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  • 4
    eternal: 1. Being without beginning or end (thefreedictionary.com/eternal) – curious-proofreader Oct 10 '14 at 5:34
  • 1
    "Limitless", "boundless" and "infinite" come to mind. In the temporal domain, "eternal". – Amadan Oct 10 '14 at 5:34
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    It's not possible to answer your question, unless you exactly explain what you are referring to. For example, is this about a cartesian line in math, or is it about a physics or cosmology matter, or concerning perhaps work or .. ? – Fattie Oct 10 '14 at 7:28
  • The term 'grammatically accurate' is imprecise here at best. – Edwin Ashworth Oct 10 '14 at 8:12
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    @araucaria True. In fact, a Möbius strip has no end twice! – StoneyB Oct 10 '14 at 17:09

would be good I think


infinity Merriam Webster

the quality of being infinite
unlimited extent of time, space, or quantity : boundlessness

  • The set of all positive numbers (or all non-negative numbers) is infinite, but it has a beginning. Conversely (as mentioned in a comment), a circle has no beginning or end, but is finite. – Scott Oct 14 '14 at 23:33
  • I think 'infinite' might be better in this usage, rather than 'infinity'. – Writing_as_Gigi Nov 23 '15 at 1:45

I like the word annular:

an·nu·lar ˈanyələr


synonyms: circular, ring-shaped, disk-shaped, round;


I like eternal, but timeless is another option.

Edit. To expand a bit on my answer, a Google search shows the definition of eternal as

lasting or existing forever; without end. "the secret of eternal youth"

synonyms: everlasting, never-ending, endless, without end, perpetual, undying, immortal, deathless, indestructible, imperishable, immutable, abiding, permanent, enduring, infinite, boundless, timeless

The emphasis of the definition and most of the synonyms seem to be on the fact that it doesn't end, but does not specify that it did not begin! So I must prefer timeless, because of its obvious meaning that it's without time constraints, which would include a beginning.

  • @choster, thanks for the welcome. I will expand my answer according to your advice. – Jannie Gerber Nov 23 '15 at 6:40

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