Fairly good is an acceptable description of something, but it may not capture the essence of the experience or product. Additionally, there are multiple synonyms to convey the same idea, making your writing feel fresh and dynamic. The phrase 'decent' or 'adequate' is an excellent alternative to using 'fairly good.' If you're looking to describe something that is above average, then 'good enough' or 'satisfactory' would be great synonyms to use. For something that exceeds expectations, you can use 'impressive,' 'remarkable,' or 'outstanding.' Overall, there are plenty of ways to describe something that is 'fairly good,' and the key is to find the one that best suits the context in your writing.