unconscionable

Adjective

• greatly exceeding bounds of reason or moderation
  • exorbitant rent
    
  • extortionate prices
    
  • spends an outrageous amount on entertainment
    
  • usurious interest rate
    
  • unconscionable spending
    

• lacking a conscience
  • a conscienceless villain
    
  • brash, unprincipled, and conscienceless
    
  • an unconscionable liar
    

Related words

• Synonyms: 
  exorbitant , extortionate , outrageous , steep , usurious , conscienceless