In a direct or straightforward manner. She looked him squarely in the eye and told him the truth.
In a firm or solid manner. The table was placed squarely in the center of the room.
Completely or exactly; without qualification or doubt. Responsibility for the failure rests squarely on the management team.
At right angles; so as to form a true square. The two beams intersected squarely, providing solid support for the roof.