Can you add a suffix to teach?

Here are some suffixes you can add to "teach" to create new words:

-er: teacher (someone who teaches)

-able: teachable (able to be taught)

-ing: teaching (the act of teaching)

-ment: teaching (the process of teaching)

There are other options depending on the specific meaning you want to convey. For example:

* -able can be combined with other prefixes to create words like unteachable (not able to be taught)

* -er can be modified to create teacher's (belonging to a teacher)

Remember that the specific meaning of the new word depends on the suffix you choose.