What does credential mean?
A credential is any document, certificate, or qualification that serves as proof of a person's competence, education, or authority. The word is most familiar in academic and professional contexts, where credentials — degrees, diplomas, licences, and certifications — are required to demonstrate eligibility for employment or advancement. It can also be used more figuratively: someone's track record or reputation may be described as their credentials when establishing whether they deserve trust or influence. In diplomacy, presenting one's credentials is a formal ceremony in which an ambassador's official documents are submitted to a head of state. More recently, the term has taken on a prominent role in computing, where credentials such as usernames, passwords, and security tokens verify a user's identity. Derived from the Latin credere, meaning 'to believe', the word ultimately concerns belief itself: a credential exists so that others may have good reason to believe what you claim about yourself.
A document, certificate, or qualification proving a person's competence, authority, or eligibility; more generally, anything that attests to trustworthiness or fitness.
"The consultant's impressive credentials convinced the board she was right for the project."
Usually used in the plural form 'credentials' even when referring to a single qualification.
To provide someone with credentials, or to certify someone as qualified or authorised.
"The agency credentials journalists before granting them access to the press area."
Chiefly American usage; often seen in contexts involving press access or sports officiating.
'Credentials' is the standard plural form and is far more common than the singular 'credential'. In everyday English, people typically speak of someone's credentials collectively rather than a single credential, so the plural often functions as the default form even when only one qualification is meant.
"Her credentials include a doctorate and fifteen years of field research."
The word 'credential' literally traces back to the Latin credere — 'to believe' — meaning that every diploma and badge you've ever earned is, at root, just a way of making someone believe in you.
Reviewed by Deb Chak, Editor. AI-assisted content curated by RJS Tech Solutions LLP.
Etymology of credential
The word credential derives from the Latin credentia, meaning 'belief' or 'trust', formed from credere ('to believe') plus the suffix -entialis. It entered English in the early 17th century, originally referring to letters of recommendation or documents vouching for a person's character or authority — a sense still visible today in the phrase 'letters of credential'. Over time its meaning broadened from physical documents to encompass qualifications and evidence of competence generally, and in modern usage it has extended further into computing, where credentials authenticate identity digitally.
Related word forms
How credential is actually used
In formal and professional contexts 'credentials' is almost always used in the plural even when referring to a single qualification (e.g. 'her credentials are impressive'). In computing, 'credentials' refers specifically to identity-verification data such as passwords, tokens, or API keys. The adjective form appears as both 'credentialed' (US) and 'credentialled' (British), though it remains less common than the noun.
Easily confused with credential
Accreditation is the official recognition granted to an institution or programme by a certifying body, whereas a credential is the proof of achievement or authority held by an individual.
A certificate is a specific document recording the completion of something, while credential is the broader term covering any evidence of qualification, including certificates.