What is a suffix for the word plight?

There isn't a common suffix specifically used with the word "plight." "Plight" is already a complete word meaning a dangerous, difficult, or unfortunate situation.

However, you could potentially use suffixes like:

* -ful: to create "plightful," meaning "characterized by or causing plight," though this is not a widely used word.

* -ed: to create "plighted," meaning "in a state of plight" or "afflicted by a plight," but this is also uncommon and might be considered archaic.

If you're looking for a way to describe someone in a difficult situation, you could use phrases like:

* "In a plight"

* "Facing a plight"

* "Suffering a plight"

It's generally best to avoid creating new words with suffixes unless you have a specific reason to do so.