dolt (n.)youdaoicibaDictYouDict[dolt 词源字典]
1540s, perhaps a variant of dold "dull, foolish," influenced by dulte, dolte, past participle forms of Middle English dullen "to dull, make or become dazed or stupid" (see dull (adj.)). Related: Doltish; doltishly; doltishness.[dolt etymology, dolt origin, 英语词源]