No, “so” is not a preposition. It can function as a conjunction, adverb, or pronoun, depending on the context.
Uses of “So”:
- As a Conjunction (Connecting clauses, often indicating cause-and-effect)
- The restaurant was fully booked, so we went elsewhere.
- He upgraded the POS system, so transactions are faster now.
- As an Adverb (Modifying an adjective, verb, or another adverb)
- The food was so delicious!
- She worked so hard to launch the restaurant.
- As a Pronoun (Referring to a previously mentioned idea)
- If you need help, just say so.
- She thinks the service is bad, but I don’t think so.
Why “So” Is Not a Preposition
- Prepositions (e.g., in, on, under, about) show relationships between words in a sentence.
- “So” does not establish relationships between a noun/pronoun and another word; instead, it connects clauses (as a conjunction) or modifies words (as an adverb).
Thus, “so” is not a preposition; it is mainly a conjunction or an adverb.
