Used to state that a claim can reasonably be supported, even though it might be debated by others.
“Arguably, remote work has changed the modern workplace more than any other trend.”
“This policy is arguably the most effective way to reduce traffic congestion downtown.”
In Speaking Task 7, 'arguably' is a strong, exam-worthy word that softens a strong claim just enough to sound thoughtful rather than absolute, for example 'This is arguably the most important factor.' Using words like this shows the rater sophisticated control of opinion language, which can boost your vocabulary score.
Synonyms: possibly, one could argue, debatably