What is the difference in using non un im il ir in for not?

The prefixes "non," "un," "im," and "il" are used to negate Words, but their usage depends on the root Word. "Non" is a standalone prefix indicating absence or negation, while "un" is used for Words that begin with a consonant (e.g., "happy" becomes "unhappy"). "Im" is used for Words that begin with "b," "m," or "p" (e.g., "possible" becomes "impossible"), and "il" is used specifically for Words starting with "l" (e.g., "legal" becomes "illegal"). Choosing the correct prefix is essential for proper usage in English.