certify
to confirm officially as true
Roots
- cert: sure, settled, made certain
- fac / fic / fact: do or make
Other words with the cert root
- ascertain: to find out or make certain
- certain: sure; not in doubt
- certainty: sureness
- certificate: document that certifies something
- certification: official confirmation or credential
- certified: officially confirmed or qualified
- certitude: complete certainty
Other words with the fac / fic / fact root
- affectation: an artificial display meant to impress
- artificial: made by humans; not natural
- benefactor: person who gives help, money, or support
- beneficent: doing good or producing benefit
- beneficial: helpful or producing good effects
- effect: a result or outcome
- efficacious: effective; producing the intended result
Certify means make certain officially.
The lab certified that the sample was uncontaminated.
A loose claim becomes firm when someone authorized signs it.