in all probability

prep_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.”

   “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.”