The term 'RUNNING FREE' can be broken down into two crossword solutions, 'LOOSE' and 'ONTHELOOSE'. 'LOOSE' is a 5-letter word meaning not firmly or tightly held in place; detached or able to be detached. 'ONTHELOOSE' is a 10-letter phrase meaning not confined or restrained; free to move about. Together, these two words describe someone or something that is not restricted or confined and is able to move freely.