Source : Webster's Revised Unabridged Dictionary (1913)

Loth \Loth\, a., Lothly \Loth"ly\, a. & adv., Lothsome
\Loth"some\, a.,
   See {Loath}, {Loathly}, etc.

Source : WordNet®

loth
     adj 1: unwillingness to do something contrary to your custom; "a
            reluctant smile"; "loath to admit a mistake";
            "unwilling to face facts" [syn: {loath}, {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)}]