demoralise in WordNet English dictionary

1. lower someone's spirits; make downhearted
   "These news depressed her"; "The bad state of her child's health demoralizes her"
   depress  deject  cast down  get down  dismay  dispirit  demoralize  demoralise 
   
2. corrupt morally or by intemperance or sensuality
   "debauch the young people with wine and women"; "Socrates was accused of corrupting young men"; "Do school counselors subvert young children?"; "corrupt the morals"
   corrupt  pervert  subvert  demoralize  demoralise  debauch  debase  profane  vitiate  deprave  misdirect 
   

demoralise in English Wiktionary