Unsoundly refers to an action or state that is not done or situated in a proper or healthy manner. Some synonyms for unsoundly include poorly, badly, weakly, improperly, incorrectly, wrongly, deficiently, inadequately, shoddily, and imperfectly. These words can be used to describe a range of situations from an unsatisfactory sleep to a poorly constructed building. In any case, using these synonyms can help to better describe the true nature of the problem at hand and allow for a more accurate discussion about possible solutions or improvements. So next time you encounter something that is not quite right, consider using one of these synonyms for unsoundly to more precisely capture the situation.