Here's why:
* Meaning: "Bright" is already a complete word with a specific meaning. Adding suffixes would usually change the meaning, and there aren't many logical or common ways to do so.
* Grammatical Function: "Bright" acts as an adjective, describing a quality. Adding suffixes that typically create nouns (like "-ness" or "-ity") wouldn't make grammatical sense.
However, there are a couple of less common ways to use "bright" with suffixes:
* "-ly": You can add "-ly" to create the adverb "brightly," which describes how something is done.
* "-ish": While not directly attached to "bright," you could use "bright-ish" to describe something that is somewhat bright, but not entirely.
Overall, "bright" isn't a word that typically takes suffixes in the English language.