encumbrance

Noun

• any obstruction that impedes or is burdensome

• a charge against property (as a lien or mortgage)

• an onerous or difficult concern
  • the burden of responsibility
    
  • that's a load off my mind
    

Related words

• Synonyms: 
  hindrance , hinderance , hitch , preventive , preventative , incumbrance , interference , burden , load , onus