Immethodically refers to an unstructured or haphazard manner of doing things. Some synonyms for this word include disorderly, chaotic, random, disorganized, unsystematic, and inconsistent. If someone is performing a task immethodically, it means they are not following any particular order or system to get it done. Other synonyms that could be used include haphazard, aimless, unplanned, irregular, erratic, and unsystematic. When something is done immethodically, it has a higher chance of being inefficient and ineffective. It is important to consider the opposite of this word, methodically, which refers to a structured and planned way of doing things to ensure the best results possible.