Noun:

1. lack of self-confidence

shynessn.羞怯；胆怯

timidityn.胆小；胆怯；羞怯

abashmentn.害臊

timorousnessadj.胆怯的；羞怯的

coynessn.怕羞；羞怯

bashfulnessn.羞怯

modestyn.谦逊；虚心；端庄；朴实；中肯

sheepishnessadj.羞怯的；局促不安的；驯服的；胆怯的

demurenessadj.严肃的；端庄的；矜持的

self-consciousnessn.自我意识

backwardnessn.智力迟钝；落后状态

doubtfulnessn.怀疑；不太相信

constraintn.约束；强制；约束条件；对感情的压抑；虚情假意[计算机] 限制.

silencen.沉默；寂静vt.使安静；使沉默

hesitancyn.犹豫；踌躇

reservevt.保留；预订；延期n.候补；预备品；贮存n.含蓄；克制

reticencen.无言；沉默；谨慎

quietnessn.平静；安定；安静

self-distrustn.没有信心；畏缩

self-doubtn.缺少自信；自我疑惑

confidencen.信任；把握；信心；知心话adj.骗得信任的

assurancen.保证，担保；确信；自信；保险

1. We set his silence down to his diffidence.
   我们把他的沉默归之于羞怯。
2. The outer crust of her life, all of her natural diffidence and reserve, was torn away.
   她的生活的外壳，她的一切天生的羞怯和庄重，全撕破了。