5  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Sour  \Sour\,  n. 
  A  sour  or  acid  substance;  whatever  produces  a  painful  effect. 
  --Spenser. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Sour  \Sour\,  v.  t.  [AS.  s?rian  to  sour,  to  become  sour.] 
  1.  To  cause  to  become  sour;  to  cause  to  turn  from  sweet  to 
  sour;  as  exposure  to  the  air  sours  many  substances. 
 
  So  the  sun's  heat,  with  different  powers,  Ripens  the 
  grape,  the  liquor  sours.  --Swift. 
 
  2.  To  make  cold  and  unproductive,  as  soil.  --Mortimer. 
 
  3.  To  make  unhappy,  uneasy,  or  less  agreeable. 
 
  To  sour  your  happiness  I  must  report,  The  queen  is 
  dead.  --Shak. 
 
  4.  To  cause  or  permit  to  become  harsh  or  unkindly.  ``Souring 
  his  cheeks.''  --Shak. 
 
  Pride  had  not  sour'd  nor  wrath  debased  my  heart. 
  --Harte. 
 
  5.  To  macerate,  and  render  fit  for  plaster  or  mortar;  as  to 
  sour  lime  for  business  purposes. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Sour  \Sour\,  a.  [Compar.  {Sourer};  superl.  {Sourest}.]  [OE. 
  sour,  sur,  AS  s?r;  akin  to  D.  zuur,  G.  sauer,  OHG.  s?r, 
  Icel.  s?rr,  Sw  sur,  Dan.  suur,  Lith.  suras  salt,  Russ. 
  surovui  harsh,  rough.  Cf  {Sorrel},  the  plant.] 
  1.  Having  an  acid  or  sharp,  biting  taste,  like  vinegar,  and 
  the  juices  of  most  unripe  fruits;  acid;  tart. 
 
  All  sour  things  as  vinegar,  provoke  appetite. 
  --Bacon. 
 
  2.  Changed,  as  by  keeping,  so  as  to  be  acid,  rancid,  or 
  musty,  turned. 
 
  3.  Disagreeable;  unpleasant;  hence  cross;  crabbed;  peevish; 
  morose;  as  a  man  of  a  sour  temper;  a  sour  reply.  ``A  sour 
  countenance.''  --Swift. 
 
  He  was  a  scholar  .  .  .  Lofty  and  sour  to  them  that 
  loved  him  not  But  to  those  men  that  sought  him 
  sweet  as  summer.  --Shak. 
 
  4.  Afflictive;  painful.  ``Sour  adversity.''  --Shak. 
 
  5.  Cold  and  unproductive;  as  sour  land;  a  sour  marsh. 
 
  {Sour  dock}  (Bot.),  sorrel. 
 
  {Sour  gourd}  (Bot.),  the  gourdlike  fruit  {Adansonia 
  Gregorii},  and  {A.  digitata};  also  either  of  the  trees 
  bearing  this  fruit.  See  {Adansonia}. 
 
  {Sour  grapes}.  See  under  {Grape}. 
 
  {Sour  gum}  (Bot.)  See  {Turelo}. 
 
  {Sour  plum}  (Bot.),  the  edible  acid  fruit  of  an  Australian 
  tree  ({Owenia  venosa});  also  the  tree  itself  which 
  furnished  a  hard  reddish  wood  used  by  wheelwrights. 
 
  Syn:  Acid;  sharp;  tart;  acetous;  acetose;  harsh;  acrimonious; 
  crabbed;  currish;  peevish. 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Sour  \Sour\,  v.  i.  [imp.  &  p.  p.  {Soured};  p.  pr  &  vb  n. 
  {Souring}.] 
  To  become  sour;  to  turn  from  sweet  to  sour;  as  milk  soon 
  sours  in  hot  weather;  a  kind  temper  sometimes  sours  in 
  adversity. 
 
  They  keep  out  melancholy  from  the  virtuous,  and  hinder 
  the  hatred  of  vice  from  souring  into  severity. 
  --Addison. 
 
  From  WordNet  r  1.6  [wn]: 
 
  sour 
  adj  1:  smelling  of  fermentation  or  staleness  [syn:  {rancid}] 
  2:  having  a  sharp  biting  taste  [ant:  {sweet}] 
  3:  one  of  the  four  basic  taste  sensations;  like  the  taste  of 
  vinegar  or  lemons 
  4:  in  an  unpalatable  state;  "sour  milk"  [syn:  {off},  {turned}] 
  5:  inaccurate  in  pitch;  "a  false  (or  sour)  note";  "her  singing 
  was  off  key"  [syn:  {false},  {off-key}] 
  6:  showing  a  brooding  ill  humor;  "a  dark  scowl";  "the 
  proverbially  dour  New  England  Puritan";  "a  glum,  hopeless 
  shrug";  "he  sat  in  moody  silence";  "a  morose  and 
  unsociable  manner";  "a  saturnine,  almost  misanthropic 
  young  genius"-  Bruce  Bliven;  "a  sour  temper";  "a  sullen 
  crowd"  [syn:  {dark},  {dour},  {glowering},  {glum},  {moody}, 
  {morose},  {saturnine},  {sullen}] 
  n  1:  a  liquor  (especially  whiskey  or  gin)  mixed  with  lemon  or 
  lime  juice  and  sugar 
  2:  the  taste  experience  when  vinegar  or  lemon  juice  is  taken 
  into  the  mouth  [syn:  {sourness},  {tartness}] 
  3:  the  sharp  taste  of  something  acidic  (as  vinegar  or  lemon 
  juice)  [syn:  {sourness},  {acidity}] 
  v  1:  go  sour  or  spoil;  "The  milk  has  soured"  [syn:  {turn},  {ferment}] 
  2:  make  sour  or  more  sour  [syn:  {acidify},  {acidulate},  {acetify}] 
  [ant:  {sweeten}] 

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