pantywaist

from WordNet (r) 3.0 (2006)

pantywaist
    n 1: a timid man or boy considered childish or unassertive [syn:
         {sissy}, {pantywaist}, {pansy}, {milksop}, {Milquetoast}]

from The Collaborative International Dictionary of English v.0.48

pantywaist \pantywaist\ n.
   A timid man or boy considered childish or unassertive.

   Syn: sissy, pansy, milksop, Milquetoast.
        [WordNet 1.5]

from Moby Thesaurus II by Grady Ward, 1.0

36 Moby Thesaurus words for "pantywaist":
      Lord Fauntleroy, Milquetoast, Percy, baby, big baby, chicken,
      cream puff, crybaby, doormat, dull tool, effeminate, goody-goody,
      gutless wonder, invertebrate, jellyfish, lightweight, lily,
      meek soul, milksop, mollycoddle, namby-pamby, nance, nancy,
      nebbish, nonentity, old woman, pansy, pushover, sad sack, sissy,
      softling, softy, sop, weak sister, weakling, wishy-washy