1. [adj]  not paid; "unpaid wages"; "an unpaid bill"
2. [adj]  engaged in as a pastime; "an amateur painter"; "gained valuable experience in amateur theatricals"; "recreational golfers"; "reading matter that is both recreational and mentally stimulating"; "unpaid extras in the documentary"
3. [adj]  without payment; "the soup kitchen was run primarily by unpaid helpers"; "a volunteer fire department"

UNPAID is a 6 letter word that starts with U.