無一定bô-it-tīng境況、狀態-擬事熟語不一定、不確定。伊無一定會來。I bô-it-tīng ē lâi.他不一定會來。類義凡勢huān-sè可能khó-lîng無定著bô-tiānn-tio̍h無的確bô-tik-khak檢采kiám-tshái反義一定it-tīng定著tiānn-tio̍h絕對tsua̍t-tuì穩當ún-tàng