The word "irreligionists" refers to those who exhibit an inclination toward atheism, agnosticism, or religious skepticism. In contrast, classical antonyms for "irreligionists" include those who exhibit an unwavering belief in the existence of a divine being or a deity, such as theists, monotheists, polytheists, or adherents of an organized religion. Some other antonyms for "irreligionists" could include devout, religious, faithful, spiritual, or pious individuals who adhere to a particular theological belief system or faith tradition. While the term irreligionist may connote skepticism, doubt, or unbelief, its antonyms point toward a confident affirmation of the divine and the sacred.