unbounded

adjective

un·​bound·​ed ˌən-ˈbau̇n-dəd 

1

: having no limit

unbounded enthusiasm/joy

2

: unrestrained, uncontrolled

unboundedness noun

Synonyms of unbounded

• infinite
• endless

Examples of unbounded in a Sentence

the unbounded enthusiasm shown by the new club members

unbounded terror that was caused by the simultaneous detonation of seven car bombs around the city

Recent Examples on the Web

The role that artificial intelligence will play in research mathematics has been talked about a fair amount in the past five years, and a fearsome, unbounded amount in the past five months. — Rivka Galchen, New Yorker, 1 Nov. 2026

Gen One Echo exhibited exactly what an unbounded persona predicts. — Terry Oroszi, Forbes.com, 29 Sep. 2026

Its core stretches and accelerates until velocity becomes unbounded, yet the system keeps its total energy finite. — Aamir Khollam, Interesting Engineering, 8 Sep. 2026

The categorical slipperiness of concrete finds its echo in the unbounded experience of the building from within. — Katy Barkan, Artforum, 1 Sep. 2026

Word History

First Known Use

1565, in the meaning defined at sense 1

Rhymes for unbounded

• abounded
• astounded
• compounded
• confounded
• expounded
• foregrounded
• impounded
• propounded
• rebounded
• resounded
• subrounded
• surrounded

Kids Definition

unbounded

adjective

un·​bound·​ed ˌən-ˈbau̇n-dəd 

: having no bounds or limits

unbounded space

unbounded enthusiasm