The Collaborative International Dictionary of English v.0.48:

Rugged \Rug"ged\, a. [See Rug, n.]
   1. Full of asperities on the surface; broken into sharp or
      irregular points, or otherwise uneven; not smooth; rough;
      as, a rugged mountain; a rugged road.
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            The rugged bark of some broad elm.    --Milton.
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   2. Not neat or regular; uneven.
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            His well-proportioned beard made rough and rugged.
                                                  --Shak.
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   3. Rough with bristles or hair; shaggy. "The rugged Russian
      bear." --Shak.
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   4. Harsh; hard; crabbed; austere; -- said of temper,
      character, and the like, or of persons.
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            Neither melt nor endear him, but leave him as hard,
            rugged, and unconcerned as ever.      --South.
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   5. Stormy; turbulent; tempestuous; rude. --Milton.
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   6. Rough to the ear; harsh; grating; -- said of sound, style,
      and the like.
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            Through the harsh cadence of a rugged line.
                                                  --Dryden.
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   7. Sour; surly; frowning; wrinkled; -- said of looks, etc.
      "Sleek o'er your rugged looks." --Shak.
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   8. Violent; rude; boisterrous; -- said of conduct, manners,
      etc.
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   9. Vigorous; robust; hardy; -- said of health, physique, etc.
      [Colloq. U.S.]
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   Syn: Rough; uneven; wrinkled; cragged; coarse; rude; harsh;
        hard; crabbed; severe; austere; surly; sour; frowning;
        violent; boisterous; tumultuous; turbulent; stormy;
        tempestuous; inclement.
        [1913 Webster] -- Rug"ged*ly, adv. -- Rug"ged*ness,
        n.
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WordNet (r) 3.0 (2006):

ruggedly
    adv 1: in a rugged manner