precipitous

Adjective

• extremely steep
  • an abrupt canyon
    
  • the precipitous rapids of the upper river
    
  • the precipitous hills of Chinese paintings
    
  • a sharp drop
    

• done with very great haste and without due deliberation
  • hasty marriage seldom proveth well- Shakespeare
    
  • hasty makeshifts take the place of planning- Arthur Geddes
    
  • rejected what was regarded as an overhasty plan for reconversion
    
  • wondered whether they had been rather precipitate in deposing the king
    

Related words

• Synonyms: 
  abrupt , sharp , hasty , overhasty , precipitate , precipitant