adj.缺乏自信的，胆怯的，羞怯的

Despite his impressive credentials, the new hire was diffident about taking on leadership responsibilities.
尽管资历令人印象深刻，这位新雇员对于承担领导责任仍显得缺乏自信。
She entered the room with a diffident smile, unsure of how she would be received by the others.
她带着羞涩的微笑走进房间，不确定其他人会如何接待她。
His diffident manner made it difficult for him to assert himself in group discussions.
他那羞怯的态度使他在小组讨论中很难表达自己的观点。
The diffident student hesitated to ask questions in class, fearing he might appear foolish.
那位拘谨的学生在课堂上犹豫着不敢提问，生怕自己显得愚蠢。
Although talented, the young musician's diffidence prevented her from showcasing her skills at the audition.
这位年轻的音乐家虽然有才华，但因过于谦逊，在试演时未能充分展示自己的技艺。
The diffident speaker struggled to command attention during his presentation, his voice barely audible.
这位不自信的演讲者在做报告时努力吸引听众注意，但他的声音几乎听不见。
In social situations, her diffident nature made her more of an observer than a participant.
在社交场合中，她害羞的个性使她更多地成为了一名旁观者而非参与者。
Despite being well-prepared, the diffident candidate stumbled over her words during the interview.
尽管准备充分，这位缺乏自信的应聘者在面试中还是言语结巴。
The diffident artist's work spoke volumes about her inner world, even though she herself was hesitant to share it.
这位羞涩的艺术家的作品充分表达了她的内心世界，尽管她本人对分享这些作品持保留态度。
With a diffident bow, he accepted the award, clearly uncomfortable with the spotlight on him.
他羞涩地鞠了一躬，接受了奖项，显然对成为焦点感到不自在。