The term 'ONE IN A RUSH' can be broken down into four words, each with 8, 5, 5, and 7 letters respectively. The first word is 'HASTENER', which refers to someone who hastens or moves quickly. The second word is 'MINER', which refers to someone who works in a mine. The third word is 'RACER', which refers to someone who competes in races. The fourth and final word is 'HURRIER', which refers to someone who hurries or moves quickly. All of these words refer to someone who is in a rush, and thus the phrase 'ONE IN A RUSH' can be used to describe any of these individuals.