premiership
Word family
Synonym discussion
Sense: noun/1
For sense 1, premiership is the most exact word when you mean the office of a prime minister or the years that person stays in power. Prime ministership is very close in meaning, but it is less common in ordinary writing. Administration often refers to a whole government and its policies, so it is wider than one leader's office. Leadership is wider still: it can describe control in politics, business, sport, or any group. Use premiership when the title matters. You can say 'During her premiership, taxes fell.' If you mean the whole governing team, 'the administration introduced new tax rules' is usually better.
Etymology
Premiership was formed in English from premier and the ending -ship. Premier came through French with the idea of being first or leading, and that French word goes back to Latin. The ending -ship often makes nouns for a role, state, or period of holding a position, so premiership first meant the office or term of a premier or prime minister. Later, especially in British English, it was also used for top-level sports competitions and the clubs in them.