Contrite
Etymology
From Latin contritus, "worn down, ground to pieces," the past participle of conterere, from com- ("together") and terere, "to rub or grind." It entered English through religious language as the heart "crushed" or "ground down" by guilt over sin. That vivid image of a spirit broken by remorse still underlies the everyday word.
adjective · /kun-TRITE/
Feeling and showing sincere remorse for having done wrong.
What it names
The genuinely humbled, sorry-to-the-bone state of someone who fully feels the weight of what they did.
Example
He looked genuinely contrite, apologizing without excuses and offering to make it right.
Related idea
Remorseful names the painful feeling of regret; contrite adds humility and the readiness to make amends, not just to suffer over the wrong.