godan verb (-ru), transitive verb
fall below; be less than; be lower than
Used especially for figures, statistics, or thresholds: profits, unemployment rate, temperature, etc. Often implies a comparison against a reference value or expectation.
See also: 上回る
今月の売上は目標を下回った。
This month's sales fell below the target.
気温が平年を大きく下回っている。
The temperature is significantly lower than the average year.