inexcusable

adjective

in·​ex·​cus·​able ˌi-nik-ˈskyü-zə-bəl 

: impossible to excuse or justify

inexcusable rudeness

inexcusableness noun

inexcusably

ˌi-nik-ˈskyü-zə-blē 

adverb

Synonyms

• indefensible
• inexpiable
• insupportable
• unforgivable
• unjustifiable
• unpardonable
• unwarrantable

Examples of inexcusable in a Sentence

spitting at a teacher is inexcusable behavior and will be severely punished

Recent Examples on the Web

PowerSchool’s lack of transparency is troubling and inexcusable, yet predictable. —Noah Barsky, Forbes, 24 Mar. 2025

My behavior at last night’s Academy Awards was unacceptable and inexcusable. —Shania Russell, EW.com, 3 Mar. 2025

With the stakes that high, Zelensky’s political opponents and many independent analysts called Friday’s argument in the Oval Office a diplomatic catastrophe, unprecedented and inexcusable. —Simon Shuster/kyiv, TIME, 1 Mar. 2025

The lack of transparency by withholding what should be public information is inexcusable. —Marsha Sutton, San Diego Union-Tribune, 17 Feb. 2025

Word History

Etymology

Middle English, from Latin inexcusabilis, from in- + excusabilis excusable

First Known Use

15th century, in the meaning defined above

Rhymes for inexcusable

• diffusible
• excusable
• infusible
• reusable
• unusable
• fusible
• usable

Kids Definition

inexcusable

adjective

in·​ex·​cus·​able ˌin-ik-ˈskyü-zə-bəl 

: too bad to be excused : not justifiable

inexcusable rudeness

inexcusably

-blē 

adverb