forcefulness/ˈfɔrsfəlnəs/复数形式forcefulnesses1力量, 强度physical energy or intensity同义词： forcestrength2说服力, 自信a person's ability to express their ideas and beliefs in a persuasive and assertive manner3说服力, 有效的说服(regarding arguments, opinions, etc.) the quality of being persuasive and effective