Nogood is a slang term used to describe someone or something that is perceived as untrustworthy, unreliable, or useless. Some of the antonyms for nogood include dependable, trustworthy, reliable, and reputable. These words denote individuals or entities that can be counted on to deliver quality results, make good on promises, and operate with a degree of integrity. Other antonyms for nogood include competent, efficient, effective, and skilled. These terms describe individuals who possess the knowledge and skills necessary to successfully perform a given task or job. Using these antonyms can help to identify positive attributes and characteristics that are deemed desirable and valuable in various situations.