say it: pri-SIP-i-tuhs
precipitous is an adjective meaning "done with very great haste and without due deliberation". It carries 2 recorded senses.
done with very great haste and without due deliberation
“hasty marriage seldom proveth well”
“hasty makeshifts take the place of planning”
“rejected what was regarded as an overhasty plan for reconversion”
“wondered whether they had been rather precipitate in deposing the king”
Definitions, synonyms and semantic relations for precipitous come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.