正当的怀疑 meaning in English

justifiable doubts

Passepartout went still further the next day ; he could not hold his tongue . t he determined to chaff fix , w ! ! ! ? eeq ? ? ? mr fix , said he , in a bantering tone ; shall we be so unfortunate as to lose you when we get to hong kong
路路通对自己的发现非常得意，但是他决定一点也不跟福克先生讲，因为他怕把改良俱乐部老爷们这种不正当的怀疑告诉他主人，会伤他主人的自尊心。