Clean Code Acronyms (CCA)
When talking about clean code, there are a few very famous acronyms that you probably want to familiarize yourself with if you don't already know them (ironically, as you will see, the use of acronyms is an anti-pattern).
SOLID
So, this is a big one. I think largely because, while very popular and neatly fitting into a meaningful acronym, the actual definitions are a bit obtuse and so have generated reams and reams of debate, blogs, articles, and books with pages and pages of text devoted to clarifying exactly what SOLID really means.
Be careful when reading about SOLID as the vague language of the principle has led to a wide range of interpretations, confusion, and misunderstanding. In fact, don't even take what I have written as anything more than "one guy's opinion" and please do read into this more to determine your own clear understanding.
SOLID – Wikipedia