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Worldwide, Аделайда (Adelaida , Аделайда ) is a widespread female first name. The first name Аделайда is habitual in Philippines, where it is quite a common feminine name, Equatorial Guinea, where it is quite a common gender-neutral name, and Mexico, where it is quite a common feminine name (explore the name in all countries). In absolute terms, this name is the most popular in Philippines, Mexico, and Argentina. Much less frequently, Аделайда is the last name as well as the forename.
Аделайда is also a name for the fictitious and mythical characters: Adelaida , the operatic character in the opera Der Idiot (Weinberg), The Idiot.