As nouns the difference between mandator and mandatary
is that mandator is a director; one who gives a mandate or order while mandatary is one who receives a mandate.
mandator
English
Noun
(
en noun)
A director; one who gives a mandate or order.
(legal) The person who employs another to perform a mandate.
Anagrams
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mandatary
English
Noun
(mandataries)
One who receives a mandate.