in all probability

in all probability (not comparable)

1. Very probably; almost certainly.

   Synonym: in all likelihood

   • 1851, House of Commons, Reports from the committees, volume 12, Great Britain, page 48:

     If you take any two Manchester manufacturers, or two Birmingham manufacturers, you will find that there is that jealousy between them that if one knew that another had looked at the thing and paid no attention to it, in all probability he would not be induced to look at it.