The word "more thawed" implies that something is partially melted or softened. Antonyms for this phrase could be "less thawed," "completely frozen," "solid," or "firm." If something is "less thawed" or "frozen," it has not experienced any melting or softening. "Solid" and "firm" carry the same implication, as they convey that something is not yielding or malleable. These antonyms can be used in various contexts, such as discussing the state of food, drinks, or even emotions. When we talk about a frozen lake, for example, we can describe it as "completely frozen" rather than "more thawed.