büyük bir olasılıkla, büyük ihtimalle

listen to the pronunciation of büyük bir olasılıkla, büyük ihtimalle
Türkçe - İngilizce
in all likelihood
Very probably; almost certainly

I can now conjecture readily that this streak of light was, in all likelihood, a gleam from a lantern carried by some one across the lawn.

With considerable certainty; without much doubt, likely, in all probability, belike

In all likelihood we are headed for war.