precipitous Synonyms

abrupt precipitant subitaneous precipitate overhasty sharp impetuous heedless hasty headlong unexpected swift sudden acclivitous steeper steep speedy sideling sheer imprudent vertical vertiginous rock-bound prerupt lacking foresight unanticipated rockbound steep-to ill-considered devil-may-care hotheaded rushed reckless rash immediate hurried hilly high declivitous careless craggy FAST expeditious breakneck brant impulsive rapid quick premature arduous