boundless

adjective

bound·​less ˈbau̇n(d)-ləs 

: having no boundaries : vast

boundless possibilities

boundlessly adverb

boundlessness noun

Synonyms of boundless

• infinite
• endless

Examples of boundless in a Sentence

We were filled with boundless joy.

Her love for her family was boundless.

Recent Examples on the Web

The live stream promises boundless access and constant visibility, collapsing the boundary between the real and the performed, the private and the public, until living a life and broadcasting one become virtually indistinguishable. — Brady Brickner-Wood, New Yorker, 12 Aug. 2026

The choices seem boundless, but when push comes to the shove, these are the 10 best luxury hotels in Tokyo in 2026 (in alphabetical order). — Jake Emen, Robb Report, 6 Aug. 2026

Very curious how or if this idea was red teamed internally because the opportunities for abuse and disinfo are literally boundless. — Geoff Brumfiel, NPR, 31 July 2026

At his metronomic best for a DR Congo team who nearly shocked England in the round of 32, Sadiki’s boundless energy carried over from the domestic season. — Anantaajith Raghuraman, New York Times, 24 July 2026

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