The Collaborative International Dictionary of English v.0.48:

Itinerancy \I*tin"er*an*cy\ ([-i]*t[i^]n"[~e]r*an*s[y^]),1 n.
   [See Itinerant.]
   [1913 Webster]
   1. A passing from place to place. --Dr. H. More.
      [1913 Webster]

   2. A discharge of official duty involving frequent change of
      residence; the custom or practice of discharging official
      duty in this way; also, a body of persons who thus
      discharge official duty.
      [1913 Webster]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "itinerancy":
   Wanderjahr, afoot and lighthearted, bumming, discursion,
   divagation, drifting, errantry, flitting, gadding, hoboism,
   itineracy, nomadism, peregrination, pererration, ramble, rambling,
   roam, roaming, rove, roving, straying, traipsing, vagabondage,
   vagabondia, vagabondism, vagrancy, wandering, wanderlust,
   wayfaring