The office, position, or state of being an executive; the term or tenure of an executive leader.
From executive plus -ship (suffix indicating office or status, as in 'leadership'). Parallels words like 'presidency' or 'directorship' in formal institutional language.
The -ship suffix is medieval in origin and was used to indicate feudal rank; applying it to 'executive' in modern times shows how we reuse ancient grammatical patterns to create new institutional titles.
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