One who acts as a custodian or guardian; a keeper or protector (archaic or rare variant).
From 'custode' plus the comparative/agent suffix '-ier,' an older English formation pattern. This word is largely obsolete, having been replaced by the more common 'custodian,' which better fits modern English morphology.
This is a ghost word—it appears in some historical texts and old dictionaries but never really caught on, probably because 'custodian' sounded more professional and authoritative when it became standardized in the 1800s.
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