The phrase "thinks fit" means to believe or consider something as appropriate or suitable. There are several synonyms that can be used in place of this phrase to convey the same meaning, including "deems appropriate," "judges best," "deems fit," "believes suitable," "considers proper," "reckons fitting," "estimates appropriate," "deems right," "regards as suitable," and "finds acceptable." These synonyms can be used interchangeably with "thinks fit" in a variety of contexts, such as decision-making, problem-solving, and reflecting on personal beliefs or preferences.