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Definitions

endless

[end-lis] / ˈɛnd lɪs /
ADJECTIVE
not stopping, not finishing
Synonyms
STRONGEST
boundless ceaseless constant continual continuous countless eternal incessant infinite interminable limitless monotonous never-ending perpetual unbroken unending unfathomable uninterrupted unlimited untold
WEAK
amaranthine deathless enduring everlasting illimitable immeasurable immortal incalculable indeterminate measureless multitudinous no end of no end to numberless overlong self-perpetuating unbounded undivided undying unsurpassable without end
Antonyms
STRONGEST
bounded brief broken calculable ceasing changeable changing completed countable discontinuous ending ephemeral finished finite fleeting halting inconstant infrequent intermittent interrupted irregular limited measurable occasional restricted stopping temporary terminable transient
WEAK
completing finishing passing

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.

That should mean no more "endless phone calls" where they try to persuade you to stay a little longer.

From BBC • Apr. 2, 2026

"Squids and cuttlefish have so many unique features compared to other animal groups, making them an endless source of inspiration for scientists," says Prof. Daniel Rokhsar, head of the Molecular Genetics Unit.

From Science Daily • Apr. 1, 2026

The era when delighting the public and media and driving endless free publicity for the AI revolution is over.

From The Wall Street Journal • Mar. 29, 2026

In under two hours, “Marc by Sofia” gives a crash course in fashion’s endless possibilities.

From Salon • Mar. 27, 2026

The cub had to learn that he was the lead wolf, or there’d be endless trouble in the future.

From "Wolf Brother" by Michelle Paver

From Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.