Her paintings received high praise at the art exhibition for their originality.

originality 是由形容词 original（原始的、独创的）加上名词后缀 -ity 构成的名词。original 来自词根 origin（起源、来源），加上形容词后缀 -al。originality 表示"独创性、原创性"，指作品或想法具有新颖独特的特点。