Check if the string is alphabetic and does not contain some specific words

Question

I use /^[a-zA-Z]+$/ to check if the string is alphabetic and /^((?!some|words|in|blacklist).)*$/ to check if it contains certain words.

How to check both conditions in one regex pattern?

Answer 1

Using

 /^(?!some|words|in|blacklist)[a-zA-Z]+$/