1. to draw a line over or above (text or a character)
Usage: technical, typography
2. to score excessively or too much
Usage: informal

Examples

• The printer will overscore the heading to emphasize it.
• In mathematics, a vinculum is used to overscore a group of digits.
• The team managed to overscore their opponents in the second half.
• Don't overscore the importance of a single test result.
• The designer chose to overscore certain letters for visual effect.