General:
* Narrowness: This is the most common opposite, referring to something lacking in width or extent.
* Depth: This focuses on the depth of something, contrasting with breadth's focus on its width.
* Shallowness: This refers to a lack of depth, often associated with superficiality.
Specific contexts:
* In the context of knowledge: The opposite of "breadth of knowledge" might be specialization or depth of knowledge.
* In the context of experience: The opposite of "breadth of experience" might be limited experience or lack of diversity.
* In the context of vision: The opposite of "breadth of vision" might be narrow-mindedness or limited perspective.
To determine the most accurate opposite of "breadth", consider the specific context in which it's used.