Supineness refers to a state of being inactive or passive, lacking energy or initiative. The antonyms for this word include activity, energy, liveliness, vigor, dynamism, and initiative. A person who is not supine is active, engaged, and always willing to take the lead. They have a sense of purpose and motivation that drives them to pursue their goals. They have a strong sense of initiative and are always looking for ways to improve themselves and their environment. In contrast, those who display supinenesses often lack the drive to accomplish anything, leading to a sense of boredom, disinterest, and unproductivity. To avoid supinenesses, one must stay motivated, engaged, and proactive in life.