1. 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"
2. characterized by precipices;
"a precipitous bluff"
3. extremely steep;
"an abrupt canyon""the precipitous rapids of the upper river""the precipitous hills of Chinese paintings""a sharp drop"