How to read: きふたん、きゅうたん
Pronunciation: 
Same names and idioms in reading:
急潭 給炭 吸痰
Names and idioms with total stroke of 21:
熊走 崇一郎 指場 釘痕 寒海
Names and idioms similar to 急湍:
京急蒲田 急使 暮急 閨急 急腹
Yojijukugo(idioms with 4 Kanji characters) including 急湍:
緩急自在 遅速緩急 繁絃急管
Idioms including 急湍:
一旦緩急あれば 気が急く 短兵急