There are plenty of synonyms for the phrase "finds out" that vary in tone and context. Some common substitutes include "discovers," "unearths," "uncovers," and "learns." These terms are often used when describing a revelation or finding new information. In a more suspicious or accusatory context, synonyms like "exposes," "reveals," and "catches" may be utilized. On the other hand, if the tone is more positive, synonyms such as "realizes," "notices," and "identifies" can be used. It's important to choose the appropriate synonym based on the intended tone and context of the sentence.