The term "pulling leg" is commonly used to describe the act of teasing or joking with someone in a playful manner. While there is no direct antonym for this phrase, some words that come to mind include sincerity, seriousness, honesty, and frankness. These words represent the opposite of teasing or pretending, and instead suggest a more genuine and straightforward approach to communication. In a culture that often celebrates quick wit and clever comebacks, it can be refreshing to embrace the power of honesty and vulnerability in our interactions with others. So next time you find yourself tempted to pull someone's leg, try taking a more sincere approach instead.