What part of speech is less?

"Less" can be either an adjective or an adverb, depending on how it's used in a sentence.

Here's how to tell:

* Adjective: "Less" modifies a noun.

* Example: "There is less traffic today." (Modifies the noun "traffic")

* Adverb: "Less" modifies a verb, adjective, or another adverb.

* Example: "He walked less quickly today." (Modifies the adverb "quickly")

Let me know if you'd like more examples!