What type of suffix would you add to the word replace?

Here are some suffixes you could add to the word "replace" and what they mean:

* -ment: Creates a noun that refers to the act of replacing something. Example: replacement.

* -able: Makes an adjective meaning "capable of being replaced". Example: replaceable.

* -er: Creates a noun that refers to something or someone that replaces. Example: replacer (though this isn't a common word).

* -ing: Creates a present participle, indicating an ongoing action. Example: replacing.

The best suffix to use depends on the specific meaning you want to convey.