xīn'ān​lǐ​dé HSK7

to have a clear conscience

Senses

心安理得 xīn'ān​lǐ​dé to have a clear conscience

to feel that what one is doing is reasonable and just, so one feels at peace and has no qualms about it

References

antonym 忐忑不安/忐忑不安 心安理得/心安理得
antonym 诚惶诚恐/誠惶誠恐 心安理得/心安理得