Used to express extreme anger or frustration, often in situations where someone feels powerless.

Strong Emotion

People don't usually physically grind their teeth, it's a metaphor for intense emotion.

Figurative Use

Implies that the action is ineffective; there's no real solution or improvement achieved.

Shows a deep level of sadness or regret, stronger than just saying someone is disappointed.

May be used as hyperbole, exaggerating feelings to make a point, not always to be taken at face value.

Look for context clues in the surrounding text to understand if it's literal despair or a figure of speech.