We don't have synonyms for kesar yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are kesa, ksar and cesar.
(n) :
Obsolete form of Kaiser. [An emperor of a German-speaking country, particularly the Holy Roman Empire (962–1806), the Austrian Empire/Austria-Hungary (1806–1918), or the German Empire (1871–1918) — often specifically Wilhelm II.]
(n) :
Obsolete form of Kaiser. [An emperor of a German-speaking country, particularly the Holy Roman Empire (962–1806), the Austrian Empire/Austria-Hungary (1806–1918), or the German Empire (1871–1918) — often specifically Wilhelm II.]