English Reference

Word

boundless

Phoneticsbound·less, stress on the first syllable

US/ˈbaʊndɫəs/

UK/bˈaʊndləs/

Definition

adj. having no limits or end. You use this to describe things like energy, space, or imagination that seem to go on forever.

adj. having no boundaries or limits; infinite in scope or extent. Often used figuratively to describe abstract qualities like enthusiasm or potential.

Examples

“She has boundless energy and never seems to get tired.”

“The internet offers boundless opportunities for learning new skills from the comfort of your home.”

“The poet was inspired by the boundless horizon of the ocean, which served as a metaphor for the human spirit's capacity for hope.”

Examples

simple

“She has boundless energy and never seems to get tired.”

contextual

“The internet offers boundless opportunities for learning new skills from the comfort of your home.”

complex

“The poet was inspired by the boundless horizon of the ocean, which served as a metaphor for the human spirit's capacity for hope.”

Usage

Typically used as an attributive adjective before a noun; frequently collocates with 'energy', 'enthusiasm', or 'possibilities'.

Etymology

From bound + -less.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry

Exam level
CambridgeCambridgeCambridge English QualificationsThe exam suite from Cambridge University Press & Assessment, from A1 Movers up to C2 Proficiency. The benchmark names double as CEFR labels.B2 FirstIELTSIELTSInternational English Language Testing SystemThe 0–9 band test co-owned by the British Council, IDP, and Cambridge. Used for university entry, work, and migration.5.5–6.5TOEFL iBTTOEFL iBTTest of English as a Foreign Language, Internet-Based TestETS's academic English test, the standard route for US university admissions. Scored 0–120, with a 1–6 scale since 2026.1–6 scale: 4.0–4.572–94TOEICTOEICTest of English for International CommunicationETS's workplace English test, big in Japan and Korea. Listening & Reading scores 10–990 and tops out at C1.785–944
Frequency
Occasional
Level
B2 · Upper Intermediate
Updated

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English Reference