1
general::
Produce, supply; also, discover. For example, Henry always comes up with the wrong answer, or We're hoping they come up with a cure in time to help Aunt Alice. [First half of 1900s]
American Heritage Idioms
2
general::
Phrase(s): come up with someone or something
to find or supply someone or something; to manage to find or improvise something. • I came up with a date at the last minute. • My mom is always able to come up with some yummy snack for me in the afternoon.
McGrawhill's American Idioms And Phrasal Verbs