What is the suffix for knowledge?

There isn't one single suffix that universally means "knowledge." The suffix used depends on the specific word and its origin. However, some suffixes that *can* contribute to the meaning of knowledge in different words include:

* -logy: This suffix indicates a particular branch of knowledge or study (e.g., biology, geology, psychology). It doesn't mean knowledge itself, but a *field* of knowledge.

* -nomy: Similar to "-logy," this suffix also indicates a branch of knowledge or a system of laws or principles (e.g., astronomy, taxonomy, economy).

* -ience: Found in words like "science," this suffix implies a specific kind of knowledge acquired through study and observation.

Therefore, there's no single answer. The meaning of "knowledge" is conveyed through the entire word, not just a suffix.