For general expertise:
* English scholar: This is a broad term that encompasses a wide range of knowledge about the English language, literature, and culture.
* Linguist: This term is more specific to the study of language, including its structure, history, and use.
* Language expert: This is a general term that can refer to anyone with advanced knowledge and skills in a specific language, including English.
For specific areas of expertise:
* Literary critic: This refers to an expert in the analysis and interpretation of literature.
* Grammar expert: This refers to someone with specialized knowledge of the rules of grammar.
* Lexicographer: This refers to someone who compiles dictionaries.
* Teacher of English: This refers to someone who specializes in teaching the English language.
* Translator: This refers to someone who translates written or spoken text from one language to another.
Ultimately, the best term to use will depend on the specific context and the type of expertise you're looking for.