Usage patterns
大まかな見積もりa rough estimate
I got a rough estimate of the cost of the construction work.
大まかな性格a generous, broad-minded personality
He has a generous, easygoing personality and doesn't worry about small things.
〈事〉を大まかに説明するto explain something in broad terms
Could you explain the procedure in broad terms?
〈物〉を大まかに分けるto divide something into rough categories
I divided the materials into three rough groups.
Expressions
大まかに言えばgenerally speaking; broadly speaking; in a broad way