unpaid

from WordNet (r) 3.0 (2006)

unpaid
    adj 1: not paid; "unpaid wages"; "an unpaid bill" [ant: {paid}]
    2: without payment; "the soup kitchen was run primarily by
       unpaid helpers"; "a volunteer fire department" [syn:
       {unpaid}, {volunteer(a)}]
    3: 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"
       [syn: {amateur}, {recreational}, {unpaid}]

from The Collaborative International Dictionary of English v.0.48

Unpaid \Unpaid\
   See {paid}.

from Moby Thesaurus II by Grady Ward, 1.0

23 Moby Thesaurus words for "unpaid":
      back, due, freewill, gratuitous, honorary, in arrear, in arrears,
      mature, outstanding, overdue, owed, owing, payable, receivable,
      redeemable, uncompensated, unrecompensed, unremunerated,
      unrequited, unrewarded, unsettled, voluntary, volunteer