The term 'SPREAD UNCHECKED' can be broken down into two crossword solutions: RAGE (4 letters) and RAGED (5 letters). RAGE is a strong emotion that is usually expressed through anger or violence. It is often associated with feelings of frustration, disappointment, and helplessness. RAGED is the past tense of the verb 'RAGE, ' which means to express intense anger or violence. Both words are used to describe a situation in which someone is expressing their emotions in an uncontrolled manner.