pathological (adj.)youdaoicibaDictYouDict[pathological 词源字典]
1680s, "pertaining to disease," formed in English from pathologic + -al (1). Sense of "worthy to be a subject of pathology, morbid, excessive" (as in pathological liar) is attested from 1845. Related: Pathologically.[pathological etymology, pathological origin, 英语词源]