名詞 compunction:

1. a feeling of deep regret (usually for some misdeed)
   同義詞：remorse, self-reproach

1. I have little compunction in doing it.
   做這件事我沒(méi)有什么不安。
2. She kept us waiting without the slightest compunction.
   她一直讓我們等著卻毫無(wú)歉意。
3. If I could find the people responsible, I would have no compunction about telling the police.
   我要知道是誰(shuí)干的就去報(bào)警而毫不後悔。

com.punc.tion

n.（名詞）
A strong uneasiness caused by a sense of guilt.See Synonyms at penitence
良心責(zé)備：負(fù)罪感引起的強(qiáng)烈不安參見 penitence
A sting of conscience or a pang of doubt aroused by wrongdoing or the prospect of wrongdoing.See Synonyms at qualm
內(nèi)疚：由于做錯(cuò)或要做錯(cuò)事產(chǎn)生的愧疚或疑慮參見 qualm

來(lái)源：
Middle English compunccioun
中古英語(yǔ) compunccioun
from Old French componction
源自 古法語(yǔ) componction
from Late Latin compunctiô compunctiôn- [sting of conscience, puncture]
源自 后期拉丁語(yǔ) compunctiô compunctiôn- [良心的疼痛，刺]
from compunctus [past participle of] compungere [to sting]
源自 compunctus [] compungere的過(guò)去分詞 [刺痛]
com- [intensive pref.] * see com-
com- [前綴，表加強(qiáng)詞義] *參見 com-
pungere [to prick] * see peuk-
pungere [刺，扎] *參見 peuk-

【引伸】
compunc.tious
compunc.tiously
adv.（副詞）