irresponsible

1 of 2

adjective

ir·​re·​spon·​si·​ble ˌir-i-ˈspän(t)-sə-bəl How to pronounce irresponsible (audio)
Synonyms of irresponsiblenext
: not responsible: such as
a
: lacking a sense of responsibility
b
: said or done with no sense of responsibility
irresponsible accusations
c
: unable especially mentally or financially to bear responsibility
d
: not answerable to higher authority
an irresponsible dictatorship
irresponsibility noun
irresponsibleness noun
irresponsibly adverb

irresponsible

2 of 2

noun

: a person who is irresponsible

Synonyms of irresponsible

Examples of irresponsible in a Sentence

Adjective He's too irresponsible to keep a job for more than a week. She made irresponsible comments that helped cause the riot. It would be irresponsible to ignore the threats.
Recent Examples on the Web
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Adjective
But their season has been ravaged by injuries enough that not buying insurance, at this point, could be irresponsible. Bennett Durando, Denver Post, 8 Feb. 2026 This is irresponsible legislation designed to garner publicity, attention and votes, not improve schools. Reader Commentary, Baltimore Sun, 6 Feb. 2026 For many adults, play may seem frivolous or even irresponsible, but research tells a different story. Katharine Gammon, Time, 6 Feb. 2026 While Shaban and Hatixhe make a modest but solid living, with his mother Nana (Kumrije Hoxa) carefully managing the household income, Shaban’s irresponsible, work-shy younger brother Liridon (Tristan Halilaj) is in desperate need of cash. Guy Lodge, Variety, 31 Jan. 2026 See All Example Sentences for irresponsible

Word History

First Known Use

Adjective

1648, in the meaning defined above

Noun

1894, in the meaning defined above

Time Traveler
The first known use of irresponsible was in 1648

Browse Nearby Words

Cite this Entry

“Irresponsible.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/irresponsible. Accessed 16 Feb. 2026.

Kids Definition

irresponsible

adjective
ir·​re·​spon·​si·​ble
ˌir-i-ˈspän(t)-sə-bəl
1
: not legally responsible
2
: having or showing no sense of responsibility
irresponsible behavior
3
: unable to bear responsibility
irresponsibility
-ˌspän(t)-sə-ˈbil-ət-ē
noun
irresponsibly
-ˈspän(t)-sə-blē
adverb

Medical Definition

irresponsible

adjective
ir·​re·​spon·​si·​ble ˌir-i-ˈspän(t)-sə-bəl How to pronounce irresponsible (audio)
: not responsible : mentally inadequate to bear responsibility
irresponsibility noun
plural irresponsibilities

More from Merriam-Webster on irresponsible

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