irrevocable

adjective

ir·​rev·​o·​ca·​ble i-ˈre-və-kə-bəl 

ˌi(r)-,

sometimes

ˌir-(r)ə-ˈvō-kə- 

: not possible to revoke : unalterable

an irrevocable decision

irrevocability

i-ˌre-və-kə-ˈbi-lə-tē 

ˌir-(r)ə-ˌvō-kə-

noun

irrevocableness

i-ˈre-və-kə-bəl-nəs 

ˌir-(r)ə-ˈvō-kə-

noun

irrevocably

i-ˈre-və-kə-blē 

ˌi(r)-

 sometimes  ˌir-(r)ə-ˈvō-kə-

adverb

Did you know?

Irrevocable and Trusts

Irrevocable has a formal sound to it and is often used in legal contexts. Irrevocable trusts are trust funds that cannot be dissolved by the people who created them (the other kind is a revocable trust). An irrevocable credit is an absolute obligation from a bank to provide credit to a customer. Irrevocable gifts, under U.S. tax law, are gifts that are given by one living person to another and can't be reclaimed by the giver. But the word isn't always legal; we've all had to make irrevocable decisions, decisions that commit us absolutely to something.

Examples of irrevocable in a Sentence

She has made an irrevocable decision.

Recent Examples on the Web

Traversing death, failure, pregnancy, irrevocable life changes and skyrocketing success, Zevin’s novel spotlights a complex friendship and the entanglements of love when a relationship is bound by a higher passion. —Los Angeles Times, 14 Apr. 2025

An irrevocable trust cannot be altered after creation, which ensures tax efficiency and liability protection. —Andre Pennington, Forbes.com, 10 Apr. 2025

The other thing to keep in mind is that a license, by its nature, can be revoked (though there are irrevocable licenses). —Jill Terreri Ramos, New York Times, 5 Apr. 2025

An irrevocable trust can save income or estate taxes or both. —Bob Carlson, Forbes, 13 Mar. 2025

Word History

Etymology

Middle English, from Latin irrevocabilis, from in- + revocabilis revocable

First Known Use

14th century, in the meaning defined above

Rhymes for irrevocable

• revocable

Kids Definition

irrevocable

adjective

ir·​rev·​o·​ca·​ble (ˈ)ir-ˈ(r)ev-ə-kə-bəl 

: not capable of being revoked

an irrevocable decision

irrevocability

(ˌ)ir-ˌ(r)ev-ə-kə-ˈbil-ət-ē 

noun

irrevocably

(ˈ)ir-ˈ(r)ev-ə-kə-blē 

adverb

Legal Definition

irrevocable

adjective

ir·​rev·​o·​ca·​ble ir-ˈre-və-kə-bəl 

: not capable of being revoked

the offer was irrevocable for ten days

irrevocability noun

irrevocably adverb