Today's Saturday Stumper

Today’s Newsday  Saturday Stumper is by Kate Chin Park, whose last (and first?) Stumper appeared on April 6, and prompted me to write “Please, more KCP Stumpers.” And now that I’m quoting myself, I’ll add that this puzzle, like that one, is “a solid sender, difficult, misdirective, punny, and blessedly free of trivia and strain.” I looked around for a place to start and hit on 45-D, five letters, “Mes después de Navidad .” And then jumped around, here and there. 1-A, which felt like an impediment to any chance of succeeding with the puzzle, was the last answer I filled in.

Some clue-and-answer pairs of note:

1-D, four letters, “Malfunction message.” A recent puzzle helped here.

5-D, six letters, “Bowls, for instance.” Nicely misdirective.

9-D, eight letters, “Ultimately plain?” NOFRILLS fits but isn’t it.

14-A, nine letters, “Campus coveralls?” An answer that I didn’t understand even after finishing the puzzle. My only excuse is that I’d call them something else. Elaine explained it to me.

23-D, eleven letters, “Deactivating but preserving.” A wild answer.

24-D, seven letters, “Candy striper?” The ones I thought of appeared in young-adult novels.

35-A, fifteen letters, “Cap wearer’s sassy slogan.” I thought first of what might be written atop a mortarboard. Highly unexpected.

43-A, five letters, “Puzz to crack.” An easy anse.

47-D, five letters, “Storms with precipitation.” It’s a trick.

49-D, four letters, “It’s from the Greek for ‘pie.’” I did not know that.

57-A, five letters, “Be a bumbler?” Groan.

58-A, nine letters, “Waiting periods.” The answer made me smile out loud.

My favorite in this puzzle is that initial impediment: 1-A, eight letters, “Outpay, but not outearn.”

No spoilers; the answers are in the comments.