For the most part
Definition 1 of 1
Pro Tip 1/3Common Usage
Used to express that something is true in most situations but not all. 
Their customer service is excellent, for the most part.
Pro Tip 2/3Slight Exceptions
Implies there might be exceptions or minor differences to the general statement. 
The trip went smoothly for the most part, except for a slight delay.
Pro Tip 3/3Subjectivity
The phrase can reflect the speaker's personal opinion or experience. 
I found the book enjoyable for the most part.