増 is one of the most commonly used Japanese kanji, and it also has a lot of special readings in addition to the standard onyomi and kunyomi readings.
ONYOMI 音読み
ま.す ma.su ま.し ma.shi ふ.える fu.eru ふ.やす fu.yasu
KUNYOMI 訓読み
ゾウ zou
Examples
この新たな投資が利益増につながるだろう。This new investment will multiply our profit.今月の鉄鋼の生産は、先月より2%増になるだろう。Steel production will increase 2% this month from last month.指標は前月比4%増の120.5に上昇した。The index advanced to 120.5, up 4% from the preceding month.