1. 径直;正中地
Squarely means directly or in the middle, rather than indirectly or at an angle.

2. 完全地;毫无疑问地
If something such as blame or responsibility lies squarely with someone, they are definitely the person responsible.

3. 直截了当地;不回避地
If you face something squarely, you face it directly, without trying to avoid it.