From Longman Dictionary of Contemporary Englishprobablyprob‧a‧bly /ˈprɒbəbli $ ˈprɑː-/ ●●●S1W1 adverb 🔊 🔊 PROBABLYused to say that something is likely to happen, likely to be true etc 🔊 It will probably take about a week. 🔊 This would probably be a good time to take a break. 🔊 It’s probably the best movie I have ever seen.[sentence adverb] 🔊 ‘Are you going to be able to do this?’ ‘Yes, probably.’ 🔊 ‘Is she going to send it back?’ ‘Probably not, no.’very/most probably 🔊 The building will be replaced, most probably by a modern sports centre.THESAURUSprobably adverb used when saying that you think something is true or will happen, although it is not completely definiteHe’s probably gone home.Rod is probably going to study law.‘Is she lying?’ ‘Probably.’likely adjective probably going to happen or probably trueThe most likely result is a win for the Democrats.The price of petrol is likely to rise again this year.It is likely that we’ll lose.it looks as if/it looks like used when saying that the present situation makes you think that something will probably happen or is probably trueIt looks like Greg has been delayed.There aren’t any taxis, so it looks as if we’ll have to walk.may/could/might well used when saying that you think something will probably happen or is probably trueHe may well come back.Take an umbrella. It might well rain later on.It may well be his last game.I would/should think spoken (also I would guess spoken) used when saying that you think something will probably happen or is probably true, although you are not sure‘Will the match still go ahead?' ’Yes, I would think so.’I should think she’s about 24 or 25.