irreplaceable

adjective

ir·​re·​place·​able ˌir-i-ˈplā-sə-bəl 

: not replaceable

an irreplaceable antique

irreplaceability

ˌir-i-ˌplā-sə-ˈbi-lə-tē 

noun

irreplaceableness

ˌir-i-ˈplā-sə-bəl-nəs 

noun

irreplaceably

ˌir-i-ˈplā-sə-blē 

adverb

Examples of irreplaceable in a Sentence

Recent Examples on the Web

Don’t schedule a first-time treatment right before an irreplaceable event; book it well ahead or wait until afterward. — Malana Vantyler, Miami Herald, 6 Oct. 2026

Hard times for scientific institutions The Academy houses a massive, irreplaceable library of over 19 million specimens. — Andrew Stelzer, NPR, 3 Oct. 2026

Much of the Red Barn’s irreplaceable art and ephemera, meticulously and lovingly curated over the years, was lost — but the music series, powered by the fireproof resiliency of those who oversee the collective, barely skipped a beat. — Aaron Davis, Sacbee.com, 2 Oct. 2026

Migratory birds are critical and irreplaceable parts of healthy local and global environments and appreciated by thousands of residents and tourists year-round. — Chicago Tribune, 24 Sep. 2026

Word History

First Known Use

1807, in the meaning defined above

Rhymes for irreplaceable

• erasable
• replaceable
• untraceable
• traceable

Kids Definition

irreplaceable

adjective

ir·​re·​place·​able ˌir-i-ˈplā-sə-bəl 

: not replaceable

a museum full of irreplaceable works of art