Certainly Meaning. The bombs are almost certainly part of a much bigger conspiracy. You use certainly to emphasize what you are saying when you are making a statement.
2 by all means. Works best if you put the word well. Certain folks would not.
A fine gentleman most certainly.
English Collins Dictionary - English Definition. In a manner that is certain. On the other hand if it turns out to be true they certainly can claim to have been the first to mention it. It is very much like indeed.
