assiduity
/ˌæsɪˈdjuːətɪ/noun
(pl. -ies)［mass noun］
1- constant or close attention to what one is doing勤奋, 刻苦; 孜孜不倦, 专注：
assiduity with which he could wear down his opponents.
他那足以拖垮对手的刻苦精神。
1.1
- count noun
assiduities
archaic or poetic/literary constant attentions to someone〈古或诗/文〉殷勤。
词源
late Middle English: from Latin assiduitas, from assiduus 'occupied with' （see ASSIDUOUS）.