How do you certify a will?

The English term 'certify' has several distinct meanings: 1: declare legally insane; 2: guarantee payment on; of checks; 3: guarantee as meeting a certain standard; 4: authorize officially; 5:...

Only the bank can certify a check, or someone at the bank. Usually, the bank will not certify a personal check, they will issue what is called a "certified check". A certified check is guaranteed to...

confirm, declare, guarantee, assure, testify, verify, validate

Depending on the kind of certification you want, you can either: buy Kimberley Process certified stones, which are certified as not blood diamonds, or buy a graded stone that has a certificate...

To certify is to state and is often written down and to testify is to say what you think happened (i.e. a crime).