incomprehensible

adjective

in·​com·​pre·​hen·​si·​ble (ˌ)in-ˌkäm-pri-ˈhen(t)-sə-bəl 

1

: impossible to comprehend : unintelligible

incomprehensible instructions

2

archaic : having or subject to no limits

incomprehensibility

(ˌ)in-ˌkäm-pri-ˌhen(t)-sə-ˈbi-lə-tē 

noun

incomprehensibleness noun

incomprehensibly

(ˌ)in-ˌkäm-pri-ˈhen(t)-sə-blē 

adverb

Synonyms of incomprehensible

• unintelligible
• mysterious
• unfathomable
• confusing
• uncanny
• esoteric
• impenetrable
• obscure
• cryptic

Examples of incomprehensible in a Sentence

I found his behavior utterly incomprehensible.

It's incomprehensible to me that he could have acted that way.

Recent Examples on the Web

To make a lunge like that, with his studs up, seemed incomprehensible, never mind dangerous. —Jack Lang, New York Times, 17 June 2026

That principle has crumbled so far in the face of Wembanyama’s combination of incomprehensible on-court abilities, youthful enthusiasm and cosmopolitan-unto-eccentric savoir faire. —Leah Asmelash, CNN Money, 9 June 2026

Europeans, Bennett notes, find this genuinely incomprehensible. —Nick Lichtenberg, Fortune, 11 May 2026

Ashly's death is an incomprehensible tragedy. —Julia Bonavita, FOXNews.com, 6 May 2026

Word History

Etymology

Middle English, from Latin incomprehensibilis, from in- + comprehensibilis comprehensible

First Known Use

14th century, in the meaning defined at sense 2

Rhymes for incomprehensible

• comprehensible
• indefensible
• indispensable
• reprehensible
• supersensible
• compensable
• condensable
• defensible
• dispensable
• extensible
• insensible
• ostensible

Kids Definition

incomprehensible

adjective

in·​com·​pre·​hen·​si·​ble (ˌ)in-ˌkäm-pri-ˈhen(t)-sə-bəl 

: impossible to understand

found their behavior incomprehensible

incomprehensibility

-ˌhen(t)-sə-ˈbil-ət-ē 

noun

incomprehensibly

-ˈhen(t)-sə-blē 

adverb