Antonyms for the word "playact" focus on authenticity, genuineness, and reality. Some antonyms include sincerity, honesty, and seriousness. Sincerity indicates genuine feelings or actions without deceit. Honesty refers to being truthful and genuine in one's words and actions. Seriousness suggests the absence of playfulness or acting, indicating a genuine dedication to a task or circumstance. Such antonyms focus on acting with intention and an absence of playfulness. In contrast to "playact," they convey a sense of honesty, authenticity and realness. In sum, alternates to the word "playact" emphasize sincere and real behavior, devoid of any semblance of performance or acting.