 Jelly. Jelly adjective. Jelly is a shorter, better way to say jelly. As in, Chloe, I am like so jelly of your unicorn bones. You don't have to speak teen to be a first-time parent. Thousands of teens in foster care will love you just the same. Visit AdoptUSKids.org. Brought to you by the U.S. Department of Health and Human Services, AdoptUSKids, and the Ad Council. AdoptUSKids.com.