boundless

[ bound-lis ]

adjective

1. having no bounds; bound; infinite or vast; unlimited:

   His boundless energy amazed his friends.

   Synonyms: illimitable, inexhaustible, unbounded, endless, limitless

boundless

/ ˈbaʊndlɪs /

adjective

1. unlimited; vast

   boundless energy

Derived Forms

• ˈboundlessly, adverb
• ˈboundlessness, noun

Other Word Forms

• boundless·ly adverb
• boundless·ness noun

Word History and Origins

Origin of boundless¹

First recorded in 1585–95; bound ³ + -less

Example Sentences

For months now, it's been baffling how Trump, whose narcissism is boundless, has allowed himself to become a supplicant to Musk, instead of getting annoyed and competitive with the billionaire meglomaniac.

From Salon

With our boundless narcissism, Americans always tend to think that the whole world, and all of history, revolves around us as God’s favored nation or whatever.

From Salon

In a pen portrait tribute to Mr Vichai, his family described him as someone with boundless energy who was an instinctive entrepreneur.

From BBC

Carroll has always appeared younger than he is, exhibiting boundless energy and enthusiasm in a profession that can jade men.

From Los Angeles Times

The actors got help from an intimacy coordinator, and Reijn encouraged a sense of freedom, allowing scenes to play out in a way that felt boundless to Dickinson.

From Los Angeles Times

Related Words

• immeasurable
• immense
• incalculable
• inexhaustible
• infinite
• limitless
• tremendous
• unending
• unlimited
• untold
• vast