1. the quality of being powerful, vigorous, or effective in expression or action

Examples

• The forcefulness of her argument convinced the entire committee.
• He spoke with such forcefulness that everyone in the room fell silent.
• The forcefulness of the storm knocked down several trees.
• Her forcefulness as a leader inspired confidence in her team.
• The forcefulness of his personality made him stand out in any group.
• The advertisement's forcefulness made it memorable and effective.