solid; firm; secure; steady
the house is very solidly built and will weather big storms
The rice grain is very firm
A firm muscle
The nail is firmly driven in
The ladder is propped securely against the wall
Rapid and steady advances
A work written with a steady hand
To play a steady game
sure; surely
To promise to come surely
That thing is not yet sure
to be sure; to be certain; to firmly believe
He was certain to win, but unexpectedly lost
surely
You know that person, surely?
We'll roam about the whole night without finding a soul to enquire of, surely
must
He must be joking, or else he's mad
If he says so, it must be true
Maybe he's right