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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.

In a statement issued last year, it said attempts to draw conclusions before the investigation was complete were "irresponsible".

From BBC • Jun. 10, 2026

Not every proposed data center will be built, but having Arizona’s grid too heavily weighted toward one sector would be irresponsible, Gallego said.

From The Wall Street Journal • Jun. 4, 2026

"It was just a way for them to sound smart, and I really hate that. I think we're scaring people and that's irresponsible," he said.

From Barron's • May 27, 2026

The IOC and Wada have described the Enhanced Games as "immoral" and "a dangerous and irresponsible concept", while World Athletics president Lord Coe said anyone taking part was "moronic".

From BBC • May 25, 2026

To do so any sooner would be incredibly irresponsible.

From "The First State of Being" by Erin Entrada Kelly

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