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

• unacceptable
• unforgivable
• unjustifiable
• outrageous
• unpardonable
• indefensible

Examples of inexcusable in a Sentence

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

Recent Examples on the Web

There was also another inexcusable error on the bases — which has become a common theme for the Yankees in the second, Paul Goldschmidt popped up to second base with one out and Jazz Chisholm Jr. on first. —James Oconnell, The Orlando Sentinel, 3 Aug. 2025

There was also another inexcusable error on the bases — which has become a common theme for this Bomber squad. —James O'Connell, New York Daily News, 2 Aug. 2025

Their latest inexcusable play happened with one out in the second inning of Saturday’s game against the Miami Marlins when Paul Goldschmidt hit a routine pop fly to second baseman Xavier Edwards. —Chris Kirschner, New York Times, 2 Aug. 2025

Mailman is also a shameful revelation of the inexcusable working conditions that letter carriers are subjected to: The injury rate for postal workers is higher than for coal miners. —Tyler Austin Harper, The Atlantic, 1 Aug. 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