Formal:
* Regularly spelled: This is the most straightforward and precise way to describe a word whose pronunciation follows standard English spelling rules.
* Phonetically regular: This emphasizes the consistency between spelling and pronunciation.
Informal:
* Sounds like it looks: This is a simple and straightforward way to describe the phenomenon.
* Easy to sound out: This emphasizes the ease of reading the word.
* Sounds how you'd expect: This implies that the word's pronunciation is predictable based on its spelling.
Technical:
* Transparent orthography: This term refers to a writing system where the relationship between spelling and pronunciation is clear and consistent.
Ultimately, the best term to use depends on the specific context and your intended audience.