1 : in a direct and honest way
We must face these problems/issues squarely.
It's time to deal squarely with the facts.
literature that is squarely in/within the American tradition
Their marketing campaign is aimed squarely at adolescents.
The dart hit the board squarely in the middle/center.
Look me squarely in the eye and tell me you're not lying.
3 : in a way that makes direct contact
He hit the ball squarely.
Her feet were squarely planted.
4 : in a way that is not limited in any way : COMPLETELY
The responsibility lies squarely with us.