IPA: //dɪsˈrɛpjʊtəbl//
KK: /dɪsˈrɛpjʊtəbl/
Not having a good reputation; considered to be dishonest or immoral.
The disreputable businessman was known for his shady dealings.
Disreputable → It is formed from "dis-" (meaning not) and "reputable" (from Latin "reputabilis", meaning worthy of respect). The word "disreputable" means not worthy of respect or having a bad reputation.
Think of 'not' ('dis-') being added to 'worthy of respect' ('reputable') — that's why disreputable means not having a good reputation.