His victory in the election is 'almost a certainty'. [=it is nearly certain/definite that he will win the election]
It is difficult to say 'with certainty' [=in a certain or definite way] which of the plays was written first.
Scientists still do not know with any degree of 'certainty' why the disease spread so quickly.
(..) Dialogue: ..,Default,,,You know, you just have\Nto have a little faith. Dialogue: ..,Default,,,You know I don't believe\Nin the intangible. Dialogue: ..,Default,,,I believe in the certainty\Nof science. Dialogue: ..,Default,,,But in this case,\Nthe science just makes me sad. (..)2016 TvShow: Bones Title: The Death in the Defense Season: 11 Episode 11