Here's why:
* Syllable Structure: A syllable typically consists of a vowel sound, with or without surrounding consonants.
* "Prayer" has one vowel sound: The vowel sound in "prayer" is the "a" sound. The "y" is not a vowel sound in this word.
* Therefore: "Prayer" has only one syllable, and it's not a double vowel syllable.
Let me know if you'd like to explore other words or syllable structures!