purposeless vs desultory

purposeless and desultory both are adjectives.

Word	Noun	Adjective	Verb	Adverb
purposeless	No	Yes	No	No
desultory	No	Yes	No	No

purposeless (adjective)	desultory (adjective)
not evidencing any purpose or goal	marked by lack of definite plan or regularity or purpose; jumping from one thing to another
serving no useful purpose; having no excuse for being