pen·i·ten·tial
adjective/ˌpenɪˈtenʃl/
/ˌpenɪˈtenʃl/
(formal)- showing that you are sorry for having done something wrong
悔悟的；悔罪的；忏悔的 - to be in a penitential mood
怀着忏悔的心情
Word Originlate 15th cent.: from late Latin paenitentialis, from Latin paenitentia ‘repentance’. - to be in a penitential mood