Proper variants of the masculine name Isa really should be: Esa, Eeesa or Eesaa. If you spell it like "Essa" people would most likely pronounce it as Ess-ah when in actual fact, the proper pronunciation of Isa is EE-saa.
― Anonymous User 5/31/2014
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A great nickname for Essa is Essie. Essie sounds like a name for a loving person who is fun to be with.