The Collaborative International Dictionary of English v.0.48:

Charismatic \Char`is*mat"ic\, a.
   Of or pertaining to a charism.
   [1913 Webster]

WordNet (r) 3.0 (2006):

charismatic
    adj 1: possessing an extraordinary ability to attract; "a
           charismatic leader"; "a magnetic personality" [syn:
           charismatic, magnetic]

Moby Thesaurus II by Grady Ward, 1.0:

89 Moby Thesaurus words for "charismatic":
   alluring, appealing, appetizing, attractive, authoritative,
   beguiling, bewitching, blandishing, bright, brilliant, cajoling,
   captivating, catching, charming, coaxing, come-hither,
   consequential, coquettish, effective, effectual, efficacious,
   enchanting, engaging, enravishing, enthralling, enticing,
   entrancing, estimable, exciting, exotic, fascinating, fetching,
   flirtatious, glamorous, glorious, hypnotic, illustrious, important,
   influential, interesting, intriguing, inviting, irresistible,
   lustrous, magic, magnetic, mesmeric, momentous, mouth-watering,
   numinous, personable, persuasive, piquant, potent, powerful,
   prepossessing, prestigious, provocative, provoquant, radiant,
   ravishing, reputable, resplendent, seducing, seductive, shining,
   siren, sirenic, spellbinding, spellful, splendent, splendid,
   splendorous, splendrous, strong, suasive, substantial, taking,
   tantalizing, teasing, telling, tempting, tickling, titillating,
   titillative, weighty, winning, winsome, witching