Being irresponsible refers to the act of not taking responsibility for one's actions or neglecting duties or obligations. Antonyms for being irresponsible would be responsible, accountable, dependable, reliable, trustworthy, and conscientious. Responsible individuals take ownership of their actions and uphold their commitment to fulfill their obligations. Accountable individuals are answerable for their actions and are willing to be held responsible for their decisions. Dependable individuals can be trusted to carry out tasks and meet expectations. Reliable individuals consistently deliver high-quality work and follow through on their promises. Trustworthy individuals are honest, ethical, and dependable. Finally, conscientious individuals are diligent, careful, and meticulous in their work.