precipitous

1 ENTRIES FOUND:
precipitous /prɪˈsɪpətəs/ adjective
precipitous
/prɪˈsɪpətəs/
adjective
Britannica Dictionary definition of PRECIPITOUS
[more precipitous; most precipitous] formal
2 
: happening in a very quick and sudden way
3 
: done too quickly and without enough thought or planning

— precipitously

adverb

— precipitousness

noun [noncount]