in all likelihood

English

Very probably; almost certainly.
- 1847, Charlotte Bronte, chapter 2, in Jane Eyre:
  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.
- 2014 September 23, A teacher, “Choosing a primary school: a teacher's guide for parents”, in The Guardian:
  [I]f your prospective school is proudly displaying that "We Are Outstanding" banner on its perimeter fence . . . do bear in mind that in all likelihood it has been awarded for results in those two subjects, rather than for its delivery of a broad and balanced curriculum.

very probably; almost certainly — see in all probability

Oxford English Dictionary, 2nd ed., 1989. See "in all likelihood," under "likelihood."
“in all likelihood”, in OneLook Dictionary Search.