致ち命めい的てきちめいてきCommon wordJLPTN1Meanings1na-adjectivefatal; lethal; deadlyDescribes something that causes death or irreversible ruin; also used figuratively for a critical flaw or mistake that leads to failure.その事じ故こで彼かれは致ち命めい的てきな傷きずを負おった。He suffered a fatal injury in the accident.