An aptronym, aptonym, or euonym is a personal name aptly or peculiarly suited to its owner (e.g. their occupation).[1]
Gene Weingarten of The Washington Post coined the word inaptonym as an antonym for "aptonym".[2]
The word "euonym" (eu- + -onym), dated to late 1800, is defined as "a name well suited to the person, place, or thing named".[3]
mw
was invoked but never defined (see the help page).