We don't have synonyms for temperas yet — it may be a rare, specialized, newly coined, or misspelled word. The closest thesaurus entries we have are temper, temperate and temporal.
(n) :
(uncountable) A paint in which the pigments are suspended in a water-soluble emulsion, such as of egg yolk or gelatine, which hardens and becomes insoluble on exposure to air.
(n) :
(uncountable) The artistic technique of painting in this medium.
(n) :
(uncountable) A paint in which the pigments are suspended in a water-soluble emulsion, such as of egg yolk or gelatine, which hardens and becomes insoluble on exposure to air.
(n) :
(uncountable) The artistic technique of painting in this medium.