Think out is a phrasal verb that means to carefully consider something or to come up with a plan or solution. Some synonyms for think out include brainstorm, devise, create, hatch, invent, ideate, plan, strategize, contemplate and deliberate. Brainstorming involves generating new ideas through a group discussion, while ideating is the process of creating ideas and concepts. Devise and invent both imply creating something new, while hatch is more about coming up with a plan or scheme. Planning, strategizing, contemplating, and deliberating all involve careful consideration and weighing of options to come up with the best plan of action. Therefore, it's always wise to think out carefully before making any important decisions.