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

Some of what the Trump administration has undertaken in the higher ed space is inexcusable. —David Paterson, New York Daily News, 7 May 2025

Losing the series to the Edmonton Oilers in the way that the Kings did is inexcusable. —Los Angeles Times, 3 May 2025

The unmistakable calamity of costly errors both physical and philosophical have left the Kings with an inexcusable end to their season. —Eric Stephens, New York Times, 2 May 2025

The Czechs scored 43 seconds in on their first shot of the game, and again with 2.4 seconds left in the first period — inexcusable times to give up a goal. —Scott Wheeler, The Athletic, 2 Jan. 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