Denshi Jisho — Online Japanese dictionary

盛衰 せいすい rise and fall; ups and downs; welfare; vicissitudes
Common word, Noun 
老衰 ろうすい senility; senile decay; infirmity (through age)
Common word, Noun, Suru verb, No-adjective 
減衰 げんすい attenuation; damping; decay
Noun, Suru verb 
必衰 ひっすい bound to decline, decay, or collapse
Noun 
栄枯盛衰 えいこせいすい ups and downs of life; vicissitudes of fortune
Noun 
荷重減衰 かじゅうげんすい weight decay
Noun, Mathematical term 
興亡盛衰 こうぼうせいすい rise and fall; prosperity and decline; vicissitudes
Noun 
盛者必衰 せいじゃひっすい The prosperous must decay
Expression 
盛者必衰 しょうしゃひっすい The prosperous must decay
Expression 
盛者必衰 しょうじゃひっすい The prosperous must decay
Expression 
盛者必衰 じょうしゃひっすい The prosperous must decay
Expression 
消長盛衰 しょうちょうせいすい prosperity and decay; rise and fall; ebb and flow; vicissitudes (of fortune)
Noun 

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