Dictionary.com
Thesaurus.com
Synonyms

endless

American  
[end-lis] / ˈɛnd lɪs /

adjective

  1. having or seeming to have no end, limit, or conclusion; boundless; infinite; interminable; incessant.

    an endless series of complaints; Time is endless.

    Synonyms:
    perpetual, continuous, unceasing, unending, illimitable, limitless
  2. made continuous, as by joining the two ends of a single length.

    an endless chain or belt.


endless British  
/ ˈɛndlɪs /

adjective

  1. having or seeming to have no end; eternal or infinite

  2. continuing too long or continually recurring

  3. formed with the ends joined

    an endless belt

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Synonym Usage

See eternal.

Other Word Forms

Etymology

Origin of endless

First recorded before 900; Middle English endelees, Old English endelēas. See end 1, -less

Explanation

Things that are endless go on forever, or at least appear to. The ocean looks endless when you sail out of sight of the shore. Endless things are infinite — your love for someone might be endless, and the mathematical symbol of infinity represents an endless number. You're most likely to use this adjective to describe things that only seem to last forever, like an endless meeting at work or an endless commute during rush hour. The Old English root of endless is endeleas, "boundless or eternal."

Keep Reading on Vocabulary.com

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The killing of Shakur, also known as 2Pac, is one of America's most celebrated cold cases, prompting endless debate among music fans over who did it and why.

From Barron's Aug. 10, 2026

Her representative said on Sunday that her “public-facing work and appearances” had “led to endless, ongoing public scrutiny.”

From The Wall Street Journal Aug. 7, 2026

If you do become trustee, you must follow the trust terms and act in your niece’s best interests — and resist being the receptacle for endless familial requests.

From MarketWatch Aug. 7, 2026

Large media companies produce endless amounts of entertainment and news.

From Salon Aug. 7, 2026

I was working one of these all-steel Case Agitators across the thousand-mile fields, under endless sky.

From "The Teacher’s Funeral" by Richard Peck

Vocabulary.com logo
by dictionary.com

Dictionary.com's Learning Companion

Go beyond just looking up words.
Remember them forever with VocabTrainer.

Start training