The antonyms for the word "unsacred" are numerous, and they include words like "sacred," "holy," "pious," "religious," "consecrated," and "blessed." These words are all used to describe something that is considered to be imbued with divine or spiritual significance or importance. They are often used in a religious or spiritual context, but can also be applied to other areas of life where something is considered to be deeply meaningful or respected. In contrast to "unsacred," these words convey a sense of reverence, devotion, and respect, and are often used to describe things like religious artifacts, holy sites, or important life events.