What part of speech is the word dull?

The word "dull" can be several parts of speech, depending on how it's used in a sentence:

* Adjective: Describing something that lacks sharpness, brightness, or excitement.

* Example: "The knife was dull and wouldn't cut the bread."

* Verb: To make something less sharp, bright, or exciting.

* Example: "The rain dulled the colors of the flowers."

* Noun: A dull person.

* Example: "He's such a dullard, always talking about boring things."

Therefore, to determine the part of speech of "dull," you need to consider its context in the sentence.