The word "study at plan" can be replaced by various synonyms that convey the same meaning. One such synonym is "analyse with intention," which implies that one is thoroughly examining something with a specific objective in mind. Another synonym for "study at plan" is "scrutinize with a purpose," which means to carefully inspect or examine something with a particular objective in mind. Additionally, one can use "investigate with intent" to describe the process of researching something with a specific aim. Finally, the phrase "examine with foresight" can also be used to replace "study at plan," emphasising the need for careful consideration and foresight in carrying out a particular task.