is every a preposition

No, “every” is not a preposition. It is a determiner.

Function of “Every” as a Determiner:

1. Used Before Singular Countable Nouns to Indicate Total Inclusion
   • Every customer received a discount.
   • The manager checks every detail carefully.
2. Used to Indicate Repeated or Regular Occurrences
   • The restaurant is open every day.
   • The chef updates the menu every season.

Why “Every” Is Not a Preposition

• Prepositions (e.g., in, on, under, about) show relationships between words.
• “Every” does not establish a relationship between a noun and another part of the sentence; instead, it modifies a noun, making it a determiner.

Thus, “every” is a determiner, not a preposition.