Deep-laid is an adjective that refers to something that has been carefully planned or arranged. Its antonyms are superficial, hasty, and impulsive. Superficial means lacking depth or substance, whereas hasty means done in a hurry without careful consideration. Impulsive means acting or speaking without thinking first. If a plan or idea is not deep-laid, then it is not well thought out and may be easily disrupted or altered. These three antonyms of deep-laid suggest that a lack of careful planning and consideration can lead to poor decision-making and negative consequences.