As adverbs the difference between surely and solidly
is that surely
is without fail while solidly
is in a solid or firm manner.
*:But then I had the flintlock by me for protection. ¶ There were giants in the days when that gun was made; for surely no modern mortal could have held that mass of metal steady to his shoulder. The linen-press and a chest on the top of it formed, however, a very good gun-carriage; and, thus mounted, aim could be taken out of the window.
*1611 , (King James Version of the Bible), 1:1
*:Forasmuch as many have taken in hand to set forth in order a declaration of those things which are most surely believed among us.
* certainly, wis
In a solid or firm manner.