What is 'free verse'?
The negative to describe free verse is to say that it is a way of writing poems that don't have a clearly defined, regular rhythm, and don't have a clearly defined rhyme. So what they have instead are lines of writing, and those lines are determined by how you want to determine how the person will read it. They determine the rhythm and breathing pattern of how you read. So you have a long line that you say with one breath and then short lines that break up the speech. Overall, that is free verse.