Where does the vowel rule not apply?

It sounds like you're asking about the "vowel rule" in English spelling. There isn't one single, overarching rule that governs all vowel sounds. Instead, there are many different rules and patterns, and exceptions abound!

To clarify, could you please tell me what specific vowel rule you're thinking of?

For example, are you thinking about:

* The "short vowel" rule (where a single vowel letter usually represents a short vowel sound)?

* The "long vowel" rule (where a vowel letter often has a long vowel sound when followed by a silent "e")?

* The "vowel digraph" rule (where two vowel letters are used to represent a single vowel sound)?

Once you tell me which rule you're interested in, I can give you examples of words where it doesn't apply!