A more thorough explanation:

Definition: Worthy of being believed or reputable.

Examples:

• The witness was considered creditable by the jury.
• The evidence presented in court was creditable and convincing.
• John's work ethic was creditable and he was promoted to a higher position.

The examples illustrate that something or someone that is creditable is trustworthy and deserving of respect. In the first example, the witness is considered creditable because they are believed to be telling the truth. In the second example, the evidence is creditable because it is convincing and believable. In the third example, John's work ethic is creditable because it is deserving of recognition and promotion.