The word "hadst had enough" implies a sense of fatigue, exhaustion or saturation. Antonyms for this phrase could include "wanting more", "craving", "desiring", "longing", "yearning" or "aching". These words convey a sense of hunger, eagerness or thirst for something new or additional. These antonyms may be applicable in various contexts, such as in relationships, work, or personal satisfaction. When used strategically and masterfully, antonyms can provide a great deal of nuance and complexity to writing, allowing for a greater depth of expression and communication.