Plural of 'chieftainship'; multiple positions, ranks, or offices of chieftains.
The regular plural of 'chieftainship,' formed by adding '-s' to the noun that itself was created from 'chieftain' plus '-ship'.
English allows us to pile suffixes onto words—'chieftain' gets '-ship' to make a role, then that gets '-s' to make multiple roles—and our brains instantly understand it, showing that English speakers intuitively grasp how suffixes build meaning like LEGO bricks.
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