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 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

The 400-odd recipes include savory pies of all stripes, a mind-boggling array of uses for many styles of cheese, and boundless vegetable dishes. — Scott Hocker, TheWeek, 2 Sep. 2026

But Abigail acted swiftly, expressing the boundless affection of Love, God, coupled with the strength of divine Principle, another name for God. — The Christian Science Monitor, Christian Science Monitor, 2 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