What does credibleness mean?
Credibleness is a noun denoting the quality of being credible — that is, believable, plausible, and worthy of trust or confidence. When we speak of the credibleness of a statement, a witness, a source, or an organization, we are assessing how readily it commands belief. The word is formed by adding the common English suffix '-ness' to the adjective credible, converting it into an abstract quality. Although it is fully legitimate, credibleness is notably rare in modern usage; writers almost always reach for its close synonym credibility, which dominates journalism, law, science, and everyday speech. As a result, encountering credibleness tends to lend a text a slightly formal, old-fashioned, or deliberately literary flavor. Its connotations are neutral to positive, since describing something's credibleness implies that believability is under consideration rather than in doubt. For readers and writers, it serves as a useful reminder of English's capacity to generate alternative abstract nouns from the same root.
nounThe quality or state of being credible; the extent to which someone or something is believable or worthy of trust.
- The quality of being credible; believability or worthiness of trust.
"The witness's calm, consistent testimony lent real credibleness to the prosecution's case."
"The auditor's thorough documentation gave the report genuine credibleness."
"Skeptics questioned the credibleness of the anonymous letter until its details were independently verified."
Virtually never used in the plural; the concept is nearly always treated as a single, uncountable quality.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of credibleness
Credibleness derives from the adjective credible, which comes from the Latin credibilis, meaning 'worthy of belief', from credere ('to believe' or 'to entrust'). The same Latin verb underlies a wide family of English words including credit, credential, and incredible. The suffix '-ness' is a native English formation used to turn adjectives into abstract nouns, so credibleness is a hybrid of Romance-rooted material and Germanic morphology. It has been used in English since at least the seventeenth century but has always remained a marginal alternative to credibility.
Related word forms
How credibleness is actually used
Credibleness is a rare, somewhat formal word; 'credibility' is far more common in everyday and professional use and is usually preferred. Credibleness follows the same '-ness' suffix pattern seen in other adjectives ending in '-ble'.
Easily confused with credibleness
Credibility is the standard, widely used noun for believability, while credibleness is a rarer, more formal variant meaning the same thing.