confident

形容词 confident:

1. having or marked by confidence or assurance
2. persuaded of; very sure
   同义词：convinced, positive
3. not liable to error in judgment or action- Michiko Kakutani
   同义词：surefooted, sure-footed

1. Is it difficult to feel at home in (ie confident when using) a foreign language?
   精通一门外语难不难?
2. Your encouragement made me more confident of my future.
   你的鼓励使我对我的未来更加有信心。
3. For my own part, being nice about appearance keeps me confident.
   就我而论，注重仪表使我自信。
4. One has to be confident in himself.
   一个人一定要对自己有信心。
5. I am confident of his coming.
   我相信他会来。
6. Inclined to bold or confident assertion; aggressively self-assured.
   过分自信的倾向于唐突或自信的断言; 过分自信的
7. He felt at ease and confident about the future.
   他对未来感到轻松自在并且充满信心。
8. We are confident of victory.
   我们确信能胜利。

con.fi.dent

adj.（形容词）
Marked by assurance, as of success.
以确信为特征的，如对成功的确信
Marked by confidence in oneself; self-assured.See Synonyms at sure
对自己有信心的；自信的参见 sure
Very bold; presumptuous.
大胆的；狂妄的
Obsolete Confiding; trustful.
【废语】 信任的；可靠的

来源：
Latin cônfodôns cônfodent- [present participle of] cônfodere [to rely on] * see confide
拉丁语 cônfodôns cônfodent- [] cônfodere的现在分词 [依赖于] *参见 confide

【引伸】
con.fidently
adv.（副词）