horrendous (adj.)youdaoicibaDictYouDict[horrendous 词源字典]
1650s, from Latin horrendus "dreadful, fearful, terrible," literally "to be shuddered at," gerundive of horrere "to bristle with fear, shudder" (see horror). Earlier form in English was horrend (mid-15c.).[horrendous etymology, horrendous origin, 英语词源]