forceful

The man who appears resolute and forceful in public is, behind closed doors, cowering in fear.

This demonstrates in a forceful way the proposition that the larger the surface the less power will be needed.

He declared it, in his own forceful language, to be the “mother of mischiefs.”

Forceful it sung along the air; but the goblin advanced with hasty steps among the clouds.

But Emma was alert and forceful enough to keep just one jump ahead of the swift-moving times.

Efficient in the handling of plough or gun or lorry, woe to the hapless babe or invalid subjected to their hard, forceful touch!