Tossing around is a commonly used phrase that indicates a casual or carefree discussion or consideration of a topic. Synonyms for this phrase may include considering, contemplating, mulling over, pondering, debating, discussing, or deliberating on a subject. These terms suggest more focused and thoughtful consideration of a topic, rather than a flippant or casual approach. Other alternatives might include exploring, examining, or scrutinizing an idea in more depth, indicating a more structured or analytical approach to the discussion. Regardless of the phrasing, the underlying implication is the same, indicating a thoughtful consideration or exploration of a subject.