convincingly
adv. manner B2 Upper Intermediate US //kənˈvɪnsɪŋɫi// UK //kənvˈɪnsɪŋli// con·vinc·ing·ly
adv. in a way that makes people believe that something is true or real. You use it when someone is very good at making an argument or playing a part.
adv. in a manner that successfully persuades others of the truth or validity of a claim. Often describes the effectiveness of an argument or a performance.
She argued her point so convincingly that everyone agreed.
The actor played the role of the king so convincingly that the audience forgot he was only twenty years old.
The defense attorney presented the evidence so convincingly that the jury reached a verdict of not guilty within less than an hour of deliberation.
From convincing + -ly.
Usage
Manner adverb — typically follows the verb it modifies or the direct object.