boundless

adjective

bound·​less ˈbau̇n(d)-ləs 

: having no boundaries : vast

boundless possibilities

boundlessly adverb

boundlessness noun

Synonyms

• bottomless
• endless
• fathomless
• horizonless
• illimitable
• immeasurable
• immensurable
• indefinite
• infinite
• limitless
• measureless
• unbounded
• unfathomable
• unlimited

Examples of boundless in a Sentence

We were filled with boundless joy.

Her love for her family was boundless.

Recent Examples on the Web

If the past 50 years of scores were all about boundless emotionality, these newer scores are pulsing and discordant — closer to Steve Reich or Karlheinz Stockhausen than European Romantic composers like Beethoven or first-generation Americans like Leonard Bernstein. —Fran Hoepfner, Vulture, 27 Feb. 2025

Filmed against the boundless backdrop of Joshua Tree, Black Woman Rest transforms the desert into an altar, inviting viewers to bear witness to the sacred act of a Black woman resting. —Ashlee Marie Preston, Forbes, 25 Feb. 2025

Louis-Dreyfus also praised Fonda’s seemingly boundless energy. —Rebecca Rubin, Variety, 24 Feb. 2025

Not so long ago, Taiwan basked in seemingly boundless, bipartisan support in Washington, where the island has long been regarded as a valiant democratic partner against China. —Chris Buckley, New York Times, 13 Feb. 2025

Word History

First Known Use

1599, in the meaning defined above

Rhymes for boundless

• groundless
• soundless

Kids Definition

boundless

adjective

bound·​less ˈbau̇nd-ləs 

: having no boundaries or limits : vast

the boundless sky

boundlessly adverb

boundlessness noun