"idealisation" in the noun sense
1. idealization, idealisation
psychiatry) a defense mechanism that splits something you are ambivalent about into two representations
2. idealization, idealisation
something that exists only as an idea
3. idealization, idealisation, glorification
a portrayal of something as ideal
"the idealization of rural life was very misleading"
Source: WordNet® (An amazing lexical database of English)
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