soberness

from WordNet (r) 3.0 (2006)

soberness
    n 1: the state of being sober and not intoxicated by alcohol
         [syn: {soberness}, {sobriety}] [ant: {drunkenness},
         {inebriation}, {inebriety}, {insobriety}, {intoxication},
         {tipsiness}]
    2: a manner that is serious and solemn [syn: {graveness},
       {gravity}, {sobriety}, {soberness}, {somberness},
       {sombreness}]

from The Collaborative International Dictionary of English v.0.48

Soberness \So"ber*ness\, n.
   The quality or state of being sober.
   [1913 Webster]