Signify 'cannot stand', 'can’t help but feel', 'cannot be overlooked'.
Verb-dictionary form + に堪える, Verb-nai form + に堪える, い-adjective + さ + に堪える, な-Adjective + さ + に堪える, Noun + の + に堪える
Long explanation:
The ~に堪える grammar point is used to express that something is unbearable, hard to withstand, or cannot be overlooked. It often describes a strong emotional response to something or a situation that is hard to bear.