Used to say that something is probably true, based on reasonable assumption rather than certainty.
“Presumably, the restaurant will get busier once the lunch hour starts.”
“Presumably, the students will celebrate once the exam is finished.”
'Presumably' is a slightly formal, higher-level word that fits well in Task 4 when you want to soften a confident guess, such as 'Presumably, the man will apologize for being late.' Using this word correctly shows the examiner you can handle more advanced vocabulary while still making clear predictions.
Synonyms: probably, supposedly, most likely