Strong; mighty; powerful.

And he said, Come. And when Peter was come down out of the ship, he walked on the water, to go to Jesus. But when he saw the wind BOISTEROUS, he was afraid; and beginning to sink, he cried, saying, Lord, save me. ( Matthew 14:29-30 )

Source: A King James Dictionary. (Used with permission. Copyright © Philip P. Kapusta)

Bibliography Information

"Entry for 'Boisterous'". A King James Dictionary.