名詞 penitent:

1. (Roman Catholic Church) a person who repents for wrongdoing (a Roman Catholic may be admitted to penance under the direction of a confessor)

形容詞 penitent:

1. feeling or expressing remorse for misdeeds
   同義詞：repentant

1. Since he has been penitent, I don't think he will do that again.
   既然他已經(jīng)悔罪了，我認(rèn)為他不會再那樣做了。

pen.i.tent

adj.（形容詞）
Feeling or expressing remorse for one`s misdeeds or sins.
悔罪的，悔過的：對某人所犯的罪惡或所做的錯事而感到或表示懺悔
n.（名詞）
One who is penitent.
懺悔者
A person performing penance under the direction of a confessor.
懺悔者，苦修者：在懺悔的神文指導(dǎo)下行懺悔的人

來源：
Middle English
中古英語
from Old French
源自 古法語
from Medieval Latin pônitôns pônitent-
源自 中世紀(jì)拉丁語 pônitôns pônitent-
from Latin paenitôns [present participle of] paenitôre [to repent]
源自 拉丁語 paenitôns [] paenitôre的現(xiàn)在分詞 [重復(fù)]

【引伸】
pen.itently
adv.（副詞）