The antonyms for the word "wast irresponsible" can be responsible, attentive, diligent, conscientious, and reliable. Being responsible means taking ownership of one's actions and being accountable for the consequences. It demands one to be attentive and diligent towards any task assigned to them, showing a sense of reliability. In contrast, being wasteful and irresponsible can lead to unwanted outcomes, harming oneself and others. Looking at the antonyms of wasteful and irresponsible, one can understand the importance of being responsible and attentive, being contributing members of the society and the environment. So, individuals must cultivate responsible behavior in their daily lives, promoting a sustainable future.