irresponsible

What it means

1. archaicNot responsible; exempt from legal responsibility, not to be held accountable.

   They left the crown what, in the eye and estimation of law, it had ever been, perfectly irresponsible.

   1790, Edmund Burke, Reflections on the Revolution in France, Oxford, published 2009, page 28

2. Lacking a sense of responsibility; performed or acting as though without responsibility; negligent.

In a sentence

They left the crown what, in the eye and estimation of law, it had ever been, perfectly irresponsible.

1790, Edmund Burke, Reflections on the Revolution in France, Oxford, published 2009, page 28

Where it comes from

1. Proto-Indo-European*né
2. Proto-Indo-European*n̥-
3. Proto-Italic*n̥-
4. Latinin-
5. Latinir-
6. Englishir-
7. Englishresponsible
8. Englishirresponsible

From ir- + responsible.