- assiduous
[assiduous 词源字典]
- assiduous: see assess
[assiduous etymology, assiduous origin, 英语词源] - assiduous (adj.)
- 1530s, from Latin assiduus "attending; continually present, incessant; busy; constant," from assidere "to sit down to" (thus "be constantly occupied" at one's work); from ad "to" (see ad-) + sedere "to sit" (see sedentary). The word acquired a taint of "servility" in 18c. Related: Assiduously; assiduousness.