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出典:Wiktionary
First attested in 1382, from Middle English disperishen, from Old French desperiss-, extended stem of desperir, from Latin disperīre (“to go completely to ruin”), present active infinitive of dispereō.
disperish (三人称単数 現在形 disperishes, 現在分詞 disperishing, 過去形および過去分詞形 disperished)
www.quickanddirtytips.com, "40+ Words for Death"
disperish