As an orthodontist i see many panoramic x-rays of children as young as 8 with the earliest signs of wisdom tooth formation. Teeth take a long time to develop and erupt. Your top front permanent tooth, for example, that came in when you were about 7, began to form before you were born.
Promisee Definition: A person whom is to be the beneficiary of a promise, an obligation or a contract. A person whom is the recipient of a promise, an obligation or a contract, received from the promisor.
Definition of guarantee for English Language Learners. : 1  to make a usually written promise that whatever you are selling, doing, etc., is what you say it is. : 2  to promise to pay for (something) if another person fails to pay for it. : 3  to say (something) with great confidence.