The world's most knowledgeable expert on bugs is an example of a preeminent bug expert.
Origin of preeminent
- Middle English from Latin praeēminēns present participle of praeēminēre to excel prae- pre- ēminēre to stand out eminent
From American Heritage Dictionary of the English Language, 5th Edition
- From Middle French preeminent and its source, Latin praeÄ“minÄ“ns, present participle of praeÄ“minÄ“re (“to stand out, excel"), from prae- (“pre-") + Ä“minÄ“re.