Etymology: how Malfoy + -oid was assembled
Malfoid joins Malfoy with the suffix -oid, meaning "resembling" or "of the form of", as in humanoid or android. Literally it means "the Malfoy-like one"; in context, "the girl version of that Malfoy type". It replaced descriptive phrasing like female Draco Malfoy because it is short, searchable and works as a character name rather than a description.
