The Collaborative International Dictionary of English v.0.48:

down-to-earth \down-to-earth\ adj.
   facing reality squarely; guided by practical experience and
   observation rather than theory. Opposite of idealistic,
   unrealistic, impractical, and pie-in-the-sky.

   Syn: hardheaded, hard-nosed, practical, pragmatic.
        [WordNet 1.5] Downtrod

WordNet (r) 3.0 (2006):

down-to-earth
    adj 1: sensible and practical; "has a straightforward down-to-
           earth approach to a problem"; "her earthy common sense"
           [syn: down-to-earth, earthy]