形容詞 confident:

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

1. Is it difficult to feel at home in (ie confident when using) a foreign language?
   精通一門外語難不難?
2. Your encouragement made me more confident of my future.
   你的鼓勵使我對我的未來更加有信心。
3. For my own part, being nice about appearance keeps me confident.
   就我而論，注重儀表使我自信。
4. One has to be confident in himself.
   一個人一定要對自己有信心。
5. I am confident of his coming.
   我相信他會來。
6. Inclined to bold or confident assertion; aggressively self-assured.
   過分自信的傾向于唐突或自信的斷言; 過分自信的
7. He felt at ease and confident about the future.
   他對未來感到輕松自在并且充滿信心。
8. We are confident of victory.
   我們確信能勝利。

con.fi.dent

adj.（形容詞）
Marked by assurance, as of success.
以確信為特征的，如對成功的確信
Marked by confidence in oneself; self-assured.See Synonyms at sure
對自己有信心的；自信的參見 sure
Very bold; presumptuous.
大膽的；狂妄的
Obsolete Confiding; trustful.
【廢語】 信任的；可靠的

來源：
Latin cônfodôns cônfodent- [present participle of] cônfodere [to rely on] * see confide
拉丁語 cônfodôns cônfodent- [] cônfodere的現(xiàn)在分詞 [依賴于] *參見 confide

【引伸】
con.fidently
adv.（副詞）