"Ill-conceived" is an adjective used to describe something that has been poorly thought out or planned. There are many synonyms for this word, such as misguided, ill-judged, imprudent, careless, hasty, and thoughtless. Other words that may be used to convey a similar meaning include poorly conceived, ill-advised, unwise, rash, negligent, and reckless. Each of these synonyms paints a picture of someone who has not taken the time to consider the consequences of their actions or decisions. It is important to be aware of these words so that you can choose the most appropriate one for the situation at hand and convey your thoughts and ideas more effectively.