The phrase "caused understand" refers to an action or event that leads to comprehension or clarity. Antonyms for this phrase could include "obscured", "confused", or "complicated". These words describe situations where understanding is hindered or made more difficult, either through deliberate obfuscation or unintentional complexity. For example, an unclear explanation or a convoluted argument could be considered the opposite of something that "causes understanding". Similarly, words like "misleading" or "mystifying" might also qualify as antonyms, as they imply a deliberate attempt to cloud comprehension.