1. Marked by a lack of responsibility: irresponsible accusations.
2. Lacking a sense of responsibility; unreliable or untrustworthy.
3. Not liable to be called to account by a higher authority.
1. One who has no sense of responsibility.
2. One who is unlikely to be called to account by a higher authority.
ir′re·spon′si·bili·ty, ir′re·sponsi·ble·ness n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.