declinist


de·clin·ism

D5077100 (dē-klī′nĭz-əm)n. The attitude or belief that a civilization or society, or a cultural, economic, or political institution within a civilization or society, is in long-term or permanent decline.
de·clin′ist adj. & n.

declinist

(dɪˈklaɪnɪst) na person who believes that something is in declineadjrelating to the belief that something is in decline