Wordnet 3.0
NOUN (1)
1. 
 a person suffering from syphilis; 
ADJECTIVE (1)
1. 
 of or relating to or infected with syphilis; 
- Example: "syphilitic symptoms"
The Collaborative International Dictionary of English v.0.48:
Syphilitic \Syph`i*lit"ic\, a. [Cf. F. syphilitique.] (Med.)
   Of or pertaining to syphilis; of the nature of syphilis;
   affected with syphilis. -- n. A syphilitic patient.
   [1913 Webster]
WordNet (r) 3.0 (2006):
syphilitic
    adj 1: of or relating to or infected with syphilis; "syphilitic
           symptoms"
    n 1: a person suffering from syphilis
Moby Thesaurus II by Grady Ward, 1.0:
41 Moby Thesaurus words for "syphilitic":
   allergic, anemic, apoplectic, arthritic, bilious, cancerous,
   chlorotic, colicky, consumptive, dropsical, dyspeptic, edematous,
   encephalitic, epileptic, laryngitic, leprous, luetic, malarial,
   malignant, measly, nephritic, neuralgic, neuritic, palsied,
   paralytic, phthisic, pleuritic, pneumonic, pocky, podagric,
   rachitic, rheumatic, rickety, scorbutic, scrofulous, tabetic,
   tabid, tubercular, tuberculous, tumorigenic, tumorous