misnomer
🇺🇸
/ˌmɪsˈnəʊmər/
🇬🇧
/ˌmɪsˈnəʊmə(r)/
A wrong or inaccurate name or title for something.
Calling her a 'genius' was a misnomer; she was actually quite average.
称她为'天才'是一个误称;实际上她相当普通。