remorseful

形容词 remorseful:

1. feeling or expressing pain or sorrow for sins or offenses
   同义词：contrite, rueful, ruthful

1. He represented to the court that the accused was very remorseful.
   他代被告向法庭陈情说被告十分懊悔。

re.morse.ful

adj.（形容词）
Marked by or filled with remorse.
悔恨的：充满悔恨的或以之为特征的

【引伸】
remorse.fully
adv.（副词）
remorse.fulness
n.（名词）