noun, noun which may take the genitive case particle 'no'
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).
既往のデータを分析する必要がある。
We need to analyze past data.
The doctor asked about the patient's medical history.
past illness; medical history; anamnesis
medical history; case history; anamnesis
Compound of 既 (already, previously) and 往 (go, past). The exact historical derivation is uncertain, but the kanji combination conveys 'what has already passed'.