adj. Ostentatiously extravagant to the point of vulgarity.
1995
I try to beautify the country — they call it extravagance, frivolity. They laugh at me and call me Imeldific, meaning extravagant, frivolous and excessive.
1986 (earliest)
Well, at least Mrs. Marcos has made a significant contribution to our lexicon. To call something "imeldific" would describe it as a shameless and vulgar extravagance.