The Collaborative International Dictionary of English v.0.48:

Groom \Groom\, v. i. [imp. & p. p. Groomed; p. pr. & vb. n.
   Grooming.]
   To tend or care for, or to curry or clean, as a, horse.
   [1913 Webster]

WordNet (r) 3.0 (2006):

groomed
    adj 1: neat and smart in appearance; well cared for; "the
           manager was a beautifully groomed young man"; "his horse
           was always groomed" [ant: ungroomed]

Moby Thesaurus II by Grady Ward, 1.0:

36 Moby Thesaurus words for "groomed":
   all ready, all set, armed, armed and ready, booted and spurred,
   briefed, coached, cocked, equipped, familiarized, good and ready,
   in arms, in battle array, in readiness, in the saddle, informed,
   loaded, loaded for bear, mature, mobilized, on the mark, planned,
   prearranged, prepared, prepared and ready, prepped, primed,
   provided, psyched up, ready, ready for anything, ripe, set,
   up in arms, vigilant, well-prepared