We don't have synonyms for simic yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are mimic, simi and simia.
(n) :
(macroeconomics) Acronym of severely indebted middle-income country (“a country with an annual income of between $736 and $9,075 per capita, a debt ratio of at least 80%, and a debt/export ratio of at least 220%”).
(n) :
(macroeconomics) Acronym of severely indebted middle-income country (“a country with an annual income of between $736 and $9,075 per capita, a debt ratio of at least 80%, and a debt/export ratio of at least 220%”).