自信（英语）

confident，英 ['k?nf?d?nt]，美 ['k?nf?d?nt]

adj. 自信的；有信心的；有把握的

副词: confidently

例句：For my own part, being nice about appearance keeps me confident.

就我而论，注重仪表使我自信。

反义词

diffident，英 ['d?f?d?nt]，美 ['d?f?d?nt]

adj. 无自信的；客客气气的；羞怯的

副词: diffidently

例句：He was too diffident to express his opinion.

他太不自信，不敢发表自己的见解。