actionable

from WordNet (r) 3.0 (2006)

actionable
    adj 1: affording grounds for legal action; "slander is an
           actionable offense"

from The Collaborative International Dictionary of English v.0.48

Actionable \Ac"tion*a*ble\, a. [Cf. LL. actionabilis. See
   {Action}.]
   That may be the subject of an action or suit at law; as, to
   call a man a thief is actionable.
   [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

62 Moby Thesaurus words for "actionable":
      against the law, anarchic, anarchistic, anomic, applicable,
      authorized, black-market, bootleg, causidical, chargeable,
      competent, constitutional, contraband, contrary to law, criminal,
      felonious, flawed, illegal, illegitimate, illicit, impermissible,
      irregular, judicial, juridical, just, justiciable, kosher, lawful,
      lawless, lawmaking, legal, legislative, legit, legitimate, licit,
      litigable, litigant, litigatory, litigious, nonconstitutional,
      nonlegal, nonlicit, outlaw, outlawed, punishable, rightful,
      sanctioned, statutory, triable, unallowed, unauthorized,
      unconstitutional, under-the-counter, under-the-table, unlawful,
      unofficial, unstatutory, unwarrantable, unwarranted, valid,
      within the law, wrongful