Fully Grasp is a phrase that means to understand something completely. It can be broken down into three words: REALIZE (7 letters), GROK (4 letters) and GetIntoOnesHead (15 letters). REALIZE means to become aware of or to understand something. GROK is an informal term meaning to understand something intuitively or deeply. GetIntoOnesHead is a phrase that implies a deep understanding of something, as if it has been absorbed into one's head. Together, these three words form the phrase Fully Grasp, which conveys a comprehensive understanding of something.