What part of speech is "for"?

The word "for" serves as a preposition in English grammar. Prepositions are words that establish relationships between other words in a sentence, often indicating direction, location, time, or introducing objects. In the case of "for," it typically indicates a purpose or a reason, as in "I bought this gift for you," where it shows the relationship between the gift and the person. Understanding "for" as a preposition helps clarify its function in a sentence, helping convey a sense of connection or intention effectively.