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Synonyms

irresponsible

American  
[ir-i-spon-suh-buhl] / ˌɪr ɪˈspɒn sə bəl /

adjective

  1. said, done, or characterized by a lack of a sense of responsibility.

    His refusal to work shows him to be completely irresponsible.

    Synonyms:
    thoughtless, undependable, unreliable
  2. not capable of or qualified for responsibility, as due to age, circumstances, or a mental deficiency.

  3. not responsible, answerable, or accountable to higher authority.

    irresponsible as a monarch.


noun

  1. an irresponsible person.

irresponsible British  
/ ˌɪrɪˈspɒnsəbəl /

adjective

  1. not showing or done with due care for the consequences of one's actions or attitudes; reckless

  2. not capable of bearing responsibility

  3. archaic not answerable to a higher authority for one's actions

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms


Etymology

Origin of irresponsible

First recorded in 1640–50; ir- 2 + responsible


Explanation

If you're irresponsible, you're careless about the consequences of your actions. You can't really rely on irresponsible people. Being irresponsible is the opposite of being responsible and careful — you do what you like and don't care what happens afterward. Forgetting to feed your dog for a week is irresponsible. Splashing around in a mud puddle in your new white pants is irresponsible. Drug use and unsafe sex are irresponsible. When the government runs up a huge deficit, many people think that's irresponsible. If you have to work with someone irresponsible, good luck: you're going to need it.

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Vocabulary lists containing irresponsible

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

But then he literally creates a monster, and the whole enterprise becomes utterly reckless and irresponsible and all about his own sort of grandiosity.

From Salon ● Oct. 16, 2026

"Why should Malaysians continue paying the price for irresponsible actions beyond our borders?" she said.

From Barron's ● Oct. 16, 2026

In a separate speech at the space conference, ACM Smyth added that "unfortunately we are seeing more and more irresponsible and provocative actions from our adversaries".

From BBC ● Sep. 23, 2026

Sitting down for a filling breakfast, instead of mainlining a protein bar, can feel irresponsible.

From Slate ● Sep. 23, 2026

When I do show up, my teachers look at me like they want to lecture me about how irresponsible they think I am.

From "The Freedom Writers Diary" by The Freedom Writers

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