The antonyms for the word "plays tricks" can be words like serious, honest, straightforward, sincere, genuine, earnest, and frank. These words all suggest behavior that is free of deception, manipulation, or trickery. When someone plays tricks, their intentions may not be clear, and they may be attempting to deceive or confuse others. However, using antonyms such as serious or honest suggests that the person in question is reliable and trustworthy. It's important to consider the context in which the word is being used, as the antonyms may vary depending on the situation. Nevertheless, identifying antonyms for "plays tricks" can help us understand the value of truthful and straightforward actions.