arguably

Word family  noun argument adjective arguable argumentative verb argue adverb arguably

 Longman Dictionary of Contemporary English 5++朗文当代英语 5++LDOCE 5++朗文 5++ar·gu·a·bly /ˈɑːɡjuəbli $ ˈɑːr-/ ●○○ adverb [sentence adverb]  used when giving your opinion to say that there are good reasons why something might be true 可论证地，可以说 Senna was arguably the greatest racing driver of all time. 可以说，塞纳是有史以来最伟大的赛车手。

Examples from the Corpus

arguably• If Glenn McGrath, arguably currently the world's finest fast bowler, drops a short one, cut or hook him.• Although first written in 1951, this description of the content and impacts of constitutions is arguably still the best.• Sketchpad was not only the first drawing program, but was arguably the best, absurdly ahead of its time.• Contact between school and business leads naturally to, arguably, the most fruitful area for partnership - curriculum enhancement.

ar·gu·a·bly adverbChineseSyllable  

when used say to Corpus opinion your giving that

arguably
ar‧gu‧a‧bly /ˈɑːɡjuəbli $ ˈɑːr-/ adverb [sentence adverb]used when giving your opinion to say that there are good reasons why something might be true:
    Senna was arguably the greatest racing driver of all time.

ar·gu·ablyBrE /ˈɑːɡjuəbli/ 🔊NAmE /ˈɑːrɡjuəbli/ 🔊 adverbused (often before a comparative or superlative adjective) when you are stating an opinion that you believe you could give reasons to support （常用于形容词比较级或最高级前）可论证地，按理◆He is arguably the best actor of his generation. 按理他是他那一代中最优秀的演员。🔊🔊