What kind of clause or phrase is Skulking out the meeting?

"Skulking out the meeting" is a participial phrase acting as an adjective modifying a noun.

Here's why:

* Participial Phrase: It's built around the present participle "skulking" and includes the prepositional phrase "out the meeting" to complete the action.

* Adjective: It describes the way someone left the meeting (stealthily, secretly). You could imagine this phrase being used in a sentence like this: "The disgruntled employee, skulking out the meeting, left without saying goodbye."

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