discreditable
From Longman Dictionary of Contemporary Englishdiscreditabledis‧cred‧it‧a‧ble /dɪsˈkredətəbəl/ adjective formal BADbad or wrong, and making people lose respect for you or trust in you discreditable dealingsExamples from the Corpusdiscreditable• This fact is not necessarily discreditable.• It was too late for that, and nothing discreditable had leapt out from Greg's perusal.• But that he did, or wanted to do, anything discreditable is quite untrue.