in·fal·li·ble /ɪnˈfæləbəl/ adjectiveadj1 CORRECTalways right and never making mistakes 永遠正確的,從不犯錯誤的 OPP fallibleNo expert is infallible. 沒有一個專家永遠正確。
an infallible memory 絕對可靠的記憶
2 EFFECTIVEsomething that is infallible always works or has the intended effect 〔事物〕絕對有效的 → fail-safeHe had an infallible cure for a hangover. 他有對付宿醉絕對靈驗的良方。
—infallibly adverbadv
—infallibility /ɪnˌfæləˈbɪləti/ noun [uncountableU]