What is the prefix word for suitable?

There isn't a single prefix word for "suitable". However, there are some prefixes that can be combined with other words to create words with a similar meaning to "suitable", such as:

* Ap - "appropriate"

* Fit - "fitting"

* Prop - "proper"

* Adeq - "adequate"

* Com - "commensurate"

It's important to note that these words are not direct prefixes for "suitable" but rather convey a similar meaning in different contexts.