The phrase "thirst for knowledge" refers to a strong desire to learn and acquire information. Synonyms for this phrase include a hunger for information, a curiosity to know more, a longing for wisdom, an unquenchable desire for understanding, a craving for education, a yearning for enlightenment, a passion for discovering new things, a thirst for wisdom, an appetite for learning, a zeal for knowledge, and a drive for acquiring new knowledge. All of these phrases express the same idea of a strong, persistent desire to learn and expand one's knowledge.