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

Eventually, my mother comes downstairs again and puts her arms around him and holds him, whispering something to him, words that to me are meaningless and incomprehensible. — Literary Hub, 17 Sep. 2026

Running parallel to this butchery investigation is the arrival of perpetually hungover FBI agent Gwen Birgssen, played by British actress Lily James with an incomprehensible southern drawl and some clunky platitudes that veer into genre parody. — Siddhant Adlakha, Variety, 16 Sep. 2026

Of all the awful plays the Carolina defense made Sunday in a 59-37 loss to the Chicago Bears, two of the most incomprehensible came from one of their best and smartest players. — Scott Fowler, Charlotte Observer, 13 Sep. 2026

The first two interceptions weren’t great, but the third one was truly incomprehensible. — Chad Graff, New York Times, 11 Sep. 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