행동이나 상황이 후회나 아쉬움을 불러일으키는
Giving rise to regret, disappointment, or sorrow; undesirable or unwelcome in nature.
예문:
"It is regrettable that the two parties could not reach a compromise before the deadline."
"The spokesperson apologized for the regrettable incident that occurred during the ceremony."
"His regrettable lack of judgment led to several serious errors in the final report."