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 possibility came from the cosmos, which to me represents boundless potential and the large-canvas storytelling of cinema. — Angelique Jackson, Variety, 2 Oct. 2026

This autumn, there are plenty of comedians rounding the country, all primed to provide you with boundless laughs. — Justin Klawans, TheWeek, 1 Oct. 2026

The mathematical universe is boundless and heterogeneous, encompassing, over here, truths about numbers and equations; there, the logic of shapes and spaces; and over there, the study of change and probability. — Quanta Magazine, 9 Sep. 2026

Some Grouper tracks are cosmic, with synths appearing like auroras along the firmament; others use wispy, haunted vocals and acoustic guitar like gentle brushstrokes on a boundless canvas. — Rhoda Feng, New Yorker, 4 Sep. 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