unassertive

1. Dr. Todt was one of the very few modest, unassertive personalities in the government.
   托特博士是这个政府中极少数谦逊而不盛气凌人的人之一。
2. One who has a meek, timid, unassertive nature. He is nothing but a chicken-hearted coward.
   胆小如鼠的人，懦夫个性懦弱、胆他只是一个胆怯的懦夫。
3. A timid man or boy considered childish or unassertive.
   一个胆小的男人或男孩被认为有孩子气或无侵略性。
4. But what if those "rules" have made you into a passive, unassertive, accommodating, compliant person when you would really prefer to speak up more about your true feelings and desires?
   但是，在你其实想说出更多的真实情感和愿望时，那些“规矩”却把你变成了消极被动、不果敢不自信、特好说话、一味顺从的人，那又该怎么办呢？
5. They thought of victims as having learning difficulties, having few friends, having low self-esteem, lacking social skills, unassertive or passive, having physical disability, physically weak and being over-protected by parents.
   与欺负者相比，受欺负者在下述特征上表现更为突出：有学习困难、没有朋友、低自尊、缺乏社会技能、不自信或被动、有身体缺陷、身体弱小、父母过度保护。

adj

1. inclined to timidity or lack of self-confidence
   1. a shy unassertive person