in all probability

Prepositional phrase

1. Very probably; almost certainly.
   • 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.1851, House of Commons, Reports from the committees, volume 12, Great Britain, page 48
   • Shoreditch Station was not officially closed until November 17, 1941, but in all probability no trains had called there since the evening of October 3, 1940.1959 October, “The Why and the Wherefore: Wartime Closing of London Stations”, in Railway Magazine, page 737

   Synonyms:

   in all likelihood