However, depending on the context, you might be looking for synonyms:
* Consideration: "I gave it a lot of consideration before making a decision."
* Idea: "She had a brilliant idea for the project."
* Opinion: "What's your opinion on the matter?"
* Reflection: "He sat in silence, lost in reflection."
If you are looking for a different way to express the concept of thinking, you could use phrases like:
* Turned over in my mind: "I turned over the idea in my mind for a while."
* Mulling over: "I'm still mulling over the offer."
* Contemplating: "She was contemplating her next move."
Let me know if you have a specific context in mind, and I can give you more tailored suggestions.