What are some words end with the suffix ss?

You're right to think about words ending in "ss". It's a less common suffix, but it does exist! Here are a few examples:

* Happiness: This is a common one, representing a state of being happy.

* Goodness: This word describes a state of being good or virtuous.

* Business: This refers to commercial activity or an organization involved in such activity.

* Gross: This word can describe something that is unpleasant or distasteful.

* Witness: This refers to a person who sees something happen.

While these are the most common words ending in "ss", there are some less frequent ones, usually in more technical or specific contexts.