Commonsensible means showing good sense or practical knowledge. Antonyms for commonsensible include reckless, foolish, imprudent, irrational, illogical, and irrational. These words describe actions or decisions that lack sound judgment or are not based on practicality. A person who is reckless makes decisions without regard for the consequences, while someone who is foolish acts in a way that is not smart or practical. Being imprudent indicates a lack of caution, while being irrational and illogical means that decisions are based on emotional impulses rather than rational thought. It is important to avoid these antonyms for commonsensible if you want to make wise and practical decisions.