1. No regular meter: The lines of a free verse poem do not have a consistent pattern of stressed and unstressed syllables.
2. No rhyme: There are no repeating sound patterns at the ends of lines.
3. Varied line lengths: The length of the lines can vary from very short to very long.
4. Enjambment: Free verse poems often contain "enjambment," where a sentence or phrase runs over from one line to the next without a pause.