Yes, “out” can be a preposition, but it is more commonly used as an adverb, adjective, or noun, depending on the context.
Uses of “Out” as a Preposition:
“Out” functions as a preposition when it shows movement away from a place and is followed by a noun or pronoun. However, this usage is less common, and “out of” is typically used instead.
- She went out the door quickly. (Less common; more natural as “out of the door”)
- He walked out the restaurant after dinner.
More Common Uses of “Out”:
- As an Adverb (Modifying a verb, indicating movement away or to completion)
- He walked out.
- The lights went out during the storm.
- As an Adjective (Describing a state of being outside or unavailable)
- The restaurant is out of ingredients.
- The new menu is out now.
- As a Noun (Informal, meaning a way to avoid something)
- He looked for an out of the situation.
- They need an out from the contract.
Why “Out” Is Rarely a Preposition Alone
- Prepositions require an object (e.g., in the kitchen, on the table).
- “Out” is usually an adverb unless followed by a noun without “of” (e.g., “out the door”).
- “Out of” is the more standard prepositional form (She went out of the building).
Thus, “out” can function as a preposition in rare cases, but it is more commonly an adverb.