Overoptimistically means being too hopeful or positive about something, often to the point of being unrealistic. Synonyms for this word could include: excessively optimistic, unrealistically hopeful, overly confident, blindly positive, excessively positive, unrealistically upbeat, unreasonably enthusiastic, and irrationally hopeful. It's important to be aware of when we are being overoptimistic, as it can lead to disappointment and setbacks. Using more realistic and grounded language can help us avoid false expectations and stay focused on what we can realistically achieve. When we use more accurate and measured language, we're more likely to set achievable goals for ourselves.