What is the greek word and definition of guilt?

The Greek word for guilt is αἴτιος (aitios). However, it's important to note that this word doesn't directly translate to the modern English concept of guilt.

αἴτιος (aitios) means "responsible," "culpable," or "the cause of." It implies a sense of being responsible for an action, whether it's good or bad.

The closest Greek word to the modern concept of guilt, with its emotional and psychological implications, is ἔνοχος (enokhos), which means "guilty" or "liable." This word signifies being responsible for a wrong act, carrying a sense of blame and wrongdoing.

While αἴτιος focuses on the cause and responsibility, ἔνοχος emphasizes the culpability and the emotional burden associated with wrong actions.