1. past tense of underrun; to run or pass beneath something
Usage: past tense form
2. past tense of underrun; to cost less than budgeted or estimated
Usage: business; past tense form

Examples

• The cable underran the bridge for several hundred feet.
• The project underran its budget by ten percent.
• Water underran the foundation during the flood.
• The construction costs underran the original estimate.
• The tunnel underran the entire city block.
• Our expenses underran projections this quarter.