hasty vs precipitant

hasty is not a noun while precipitant is a noun.

Word	Noun	Adjective	Verb	Adverb
hasty	No	Yes	No	No
precipitant	Yes	Yes	No	No

As adjectives, hasty and precipitant are synonyms defined as:

hasty and precipitant: done with very great haste and without due deliberation

Other synonyms of hasty include overhasty, precipitate, precipitous.

hasty (noun)	precipitant (noun)
	an agent that causes a precipitate to form

hasty (adjective)	precipitant (adjective)
excessively quick	done with very great haste and without due deliberation
done with very great haste and without due deliberation