Word parts change

probable + -ly

Pronunciation change

Adverb change

Positive
probably

Comparative
more probably

Superlative
most probably

  1. If something is probably true, or will probably happen, it means there is a high chance of it.
    I'm not sure what I'm doing tonight, but I'll probably stay home and study.
    "Is Ed here?" "Uh... he usually leaves at 4:00, so he's probably gone, but I'll go and have a look."