in all likelihood

Almost certainly so

In all likelihood means almost certainly or very probably.

The phrase signals high confidence without absolute certainty: In all likelihood, the flight will be delayed.

It's slightly more formal than "probably" and often introduces predictions or assessments based on available evidence.

Related

doubtless · anticipated · educated guess · best guess · forecast · prediction · plausible · possible · estimation · assumption · bet · foreseeable · all things considered · apparently · speculation · odds are · surely · seemingly

Opposites
probability/certainty

in all likelihoodimpossibly

Beyond what's achievable

improbably · against all odds · not a chance · doubtfully · unlikely

epistemic commitment

in all likelihoodwho knows

Expression of uncertainty

possibly · conceivably · perhaps · maybe · questionably

Family

like, likely, liking, dislike, liked, unlikely, likeness, likelihood, likes

Familiarity
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Used worldwide · Timeless · Abstract · Everyday, not technical · Rated G