credible / creditable / credulous

Believable, deserving praise, and too ready to believe.

Credible means believable. Creditable means deserving credit. Credulous means too ready to believe. A credible witness. A creditable effort. A credulous buyer.

Examples

Use a credible account

Use a creditable showing

Use a credulous reader

Avoid a credulous account (If you mean the account can be believed.)