The Collaborative International Dictionary of English v.0.48:

Farcical \Far"ci*cal\, a.
   Of or pertaining to the disease called farcy. See Farcy, n.
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Farcical \Far"ci*cal\, a.
   Pertaining to farce; appropriated to farce; ludicrous;
   unnatural; unreal.
   [1913 Webster]

         They deny the characters to be farcical, because they
         are ??tually in in nature.               --Gay.
   -- Far"ci*cal*ly, adv. -Far"ci*cal*ness, n.
   [1913 Webster]

WordNet (r) 3.0 (2006):

farcical
    adj 1: broadly or extravagantly humorous; resembling farce; "the
           wild farcical exuberance of a clown"; "ludicrous green
           hair" [syn: farcical, ludicrous, ridiculous]

Moby Thesaurus II by Grady Ward, 1.0:

30 Moby Thesaurus words for "farcical":
   absurd, amusing, broad, burlesque, camp, campy, caricatural, comic,
   comical, doggerel, droll, extravagant, foolish, funny, humorous,
   laughable, light, ludicrous, macaronic, mock-heroic, nonsensical,
   outrageous, parodic, preposterous, ridiculous, risible, satiric,
   silly, slapstick, tragicomic