The Collaborative International Dictionary of English v.0.48:

Tenderfoot \Ten"der*foot`\, n.
   1. A delicate person; one not inured to the hardship and
      rudeness of pioneer life. [Slang, Western U. S.]
      [1913 Webster]

   2. See Boy scout.
      [Webster 1913 Suppl.]

The Collaborative International Dictionary of English v.0.48:

Boy scout \Boy scout\
   Orig., a member of the "Boy Scouts," an organization of boys
   founded in 1908, by Sir R. S. S. Baden-Powell, to promote
   good citizenship by creating in them a spirit of civic duty
   and of usefulness to others, by stimulating their interest in
   wholesome mental, moral, industrial, and physical activities,
   etc. Hence, a member of any of the other similar
   organizations, which are now worldwide. In "The Boy Scouts of
   America" the local councils are generally under a scout
   commissioner, under whose supervision are scout masters, each
   in charge of a troop of two or more patrols of eight scouts
   each, who are of three classes, tenderfoot, second-class
   scout, and first-class scout.
   [Webster 1913 Suppl.]

WordNet (r) 3.0 (2006):

tenderfoot
    n 1: an inexperienced person (especially someone inexperienced
         in outdoor living)

Moby Thesaurus II by Grady Ward, 1.0:

67 Moby Thesaurus words for "tenderfoot":
   abecedarian, alphabetarian, apprentice, arriviste, articled clerk,
   baby, beginner, boot, catechumen, colt, conscript, dabbler, deb,
   debutant, dilettante, draft, drafted man, draftee, dunce, emigrant,
   enlistee, enrollee, entrant, fledgling, fool, freshman,
   gate-crasher, greenhorn, greeny, ignoramus, illiterate, illiterati,
   immigrant, inductee, infant, initiate, intruder, know-nothing,
   learner, levy, lowbrow, middlebrow, neophyte, nestling,
   new arrival, new boy, newcomer, no scholar, novice, novitiate,
   novus homo, parvenu, postulant, probationer, probationist,
   puddinghead, raw recruit, recruit, rookie, selectee, settler,
   squatter, stowaway, trainee, tyro, unintelligentsia, upstart