既き往おう

noun, noun which may take the genitive case particle 'no'

the past; previous; bygone

Formal or literary term. Often used in medical contexts (既往歴 = medical history) or in set phrases like 既往の事実 (past facts).

• 既き往おうのデータを分ぶん析せきする必ひつ要ようがある。