It's rather nice to be able to read an article on how to use 比较 to mean "rather" in Chinese grammar.

Structure
The adverb 比较 (bǐjiào) can be used to express "quite", "rather", or "relatively". It's a way of comparing one thing with a general idea instead of comparing two concrete things.

Examples

Nǐ bǐ jiào pànɡ.
你 比较 胖。
You're rather fat.