irresponsible

Meanings

1. 1
   adj

   showing lack of care for consequences

   behaved like an irresponsible idiot

2. 2
   adj

   Not 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.

3. 3
   adj

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

4. 4
   noun

   Someone who is not responsible.

Etymology

From ir- + responsible.