unmistakably
US /ˌʌn.mɪˈsteɪ.kə.bli/
UK /ˌʌn.mɪˈsteɪ.kə.bli/

副詞
1.
紛れもなく, 間違いなく
in a way that is very easy to recognize and cannot be confused with anything else
例:
•
The handwriting was unmistakably his.
その筆跡は紛れもなく彼のものでした。
•
She could hear the unmistakably British accent.
彼女には紛れもないイギリス訛りが聞こえた。
Lingolandでこの単語を学ぶ