adj .
timid ; lacking in self-confidence 소심한 ; 자신감이 부족한

• The _____ student never made a single comment in class. Diffident and confident oar opposites.
• Mary's stammer made her _____ in conversation and shy in groups of strangers.
  메리는 말을 더듬는 버릇 때문에 낯선 사람들을 보면 수줍어하고 대화를 할 때면 자신이 없었다.
• Amos's _____ce led many participants to believe he hadn't been present at the meeting, even though he had.