Loath

from WordNet (r) 3.0 (2006)

loath
    adj 1: unwillingness to do something contrary to your custom; "a
           reluctant smile"; "loath to admit a mistake" [syn:
           {loath}, {loth}, {reluctant}]
    2: (usually followed by `to') strongly opposed; "antipathetic to
       new ideas"; "averse to taking risks"; "loath to go on such
       short notice"; "clearly indisposed to grant their request"
       [syn: {antipathetic}, {antipathetical}, {averse(p)},
       {indisposed(p)}, {loath(p)}, {loth(p)}]

from The Collaborative International Dictionary of English v.0.48

Loath \Loath\ (l[=o]th), a. [OE. looth, loth, AS. l[=a][eth]
   hostile, odious; akin to OS. l[=a][eth], G. leid, Icel.
   lei[eth]r, Sw. led, G. leiden to suffer, OHG. l[imac]dan to
   suffer, go, cf. AS. l[imac][eth]an to go, Goth. leipan, and
   E. lead to guide.]
   1. Hateful; odious; disliked. [Obs.] --Chaucer.
      [1913 Webster]

   2. Filled with disgust or aversion; averse; unwilling;
      reluctant; as, loath to part.
      [1913 Webster]

            Full loth were him to curse for his tithes.
                                                  --Chaucer.
      [1913 Webster]

            Why, then, though loath, yet must I be content.
                                                  --Shak.
      [1913 Webster]

from Moby Thesaurus II by Grady Ward, 1.0

23 Moby Thesaurus words for "loath":
      afraid, apathetic, averse, backward, balking, balky, dilatory,
      disinclined, grudging, hesitant, indifferent, indisposed, laggard,
      perfunctory, reluctant, renitent, restive, slow, slow to, uneager,
      unenthusiastic, unwilling, unzealous