The position of a keeper; guardianship, ownership.(noun)
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Use "keepership" in a sentence
"A single Aramite, definitely a keepership guard as far as the drake was able to tell, kept an eye out for any intruders."
"Most looked like members of the keepership guard, but there were two keepers as well, one of whom, much younger than the Gryphon would have expected, was evidently in charge."
"The keepership was semireligious, being connected so deeply with the Ravager."