Source : Webster's Revised Unabridged Dictionary (1913)

Respectable \Re*spect"a*ble\ (-?-b'l), a. [F. respectable, LL.
   respectabilis.]
   1. Worthy of respect; fitted to awaken esteem; deserving
      regard; hence, of good repute; not mean; as, a respectable
      citizen. ``The respectable quarter of Sicca.'' --J. H.
      Newman.

            No government, any more than an individual, will
            long be respected, without being truly respectable.
                                                  --Madison.

   2. Moderate in degree of excellence or in number; as, a
      respectable performance; a respectable audience.
      --{Re*spect"a*ble*ness},n. -- {Re*spect"a*bly}, adv.

Source : WordNet®

respectable
     adj 1: worthy of respect; "a respectable woman" [ant: {unrespectable}]
     2: deserving of esteem and respect; "all respectable companies
        give guarantees"; "ruined the family's good name" [syn: {estimable},
         {good}, {honorable}]
     3: large in amount or extent or degree; "it cost a considerable
        amount"; "a goodly amount"; "received a hefty bonus"; "a
        respectable sum"; "a tidy sum of money"; "a sizable
        fortune" [syn: {goodly}, {goodish}, {hefty}, {sizable}, {sizeable},
         {tidy}]