無定著bô-tiānn-tio̍h副詞副詞也許、說不定。無定著彼件代誌就是伊做的。Bô-tiānn-tio̍h hit kiānn tāi-tsì tō sī i tsò--ê.說不定那件事就是他做的。類義凡勢huān-sè拍算phah-sǹg無一定bô-it-tīng無定bô-tiānn反義一定it-tīng必然pit-jiân/pit-liân定規tīng-kui形容詞指小孩子不安定,無法安靜下來。彼个囡仔足無定著,坐都坐袂牢。Hit ê gín-á tsiok bô-tiānn-tio̍h, tsē to tsē bē tiâu.那個小孩很沒定性,坐都坐不住。類義無時定bô-sî-tiānn反義得定tik-tiānn