The concept of being "more toothless" implies a loss or lack of power, strength, or effectiveness. Antonyms for this phrase could include words such as powerful, strong, effective, potent, full-bodied, and robust. These words suggest a sense of vitality, capability, and resilience, all of which are opposite to the idea of being toothless. When looking for antonyms for "more toothless," it's important to consider the context in which the phrase is used, as different situations may require different types of strength or power. Nonetheless, using antonyms can help to emphasize the positive aspects of a situation or person, and provide a sense of hope and possibility.