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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:

"I am thinking especially about the youth...I saw 100 or so joggers on the street. Frankly, that's irresponsible."

From BBC Jun. 26, 2026

Jenrick declined, however, to specify the full proposed rates, saying it would be "irresponsible" to do so with up to three years before the next election.

From BBC Jun. 15, 2026

Viewers considered it, as one art historian would write later, either “a symbol of the ultimate in moral degeneracy or as a mad and irresponsible joke.”

From The Wall Street Journal Jun. 12, 2026

“I don’t think it should be irresponsible to defense,” he said.

From Los Angeles Times Jun. 10, 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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