1. Office announcement → MEMO
5. Jump → LEAP
9. Repairs a hole → MENDS
14. Ingredient in some smoothie bowls → ACAI
15. Plus → ALSO
16. To no ___ (without success) → AVAIL
17. "Remedy" for a riled-up person → CHILLPILL
19. Dashboard instrument → GAUGE
20. CR-V or Civic → HONDA
21. George who played Sulu on "Star Trek" → TAKEI
23. Headstone letters → RIP
24. Penalty for bank fraud → FROZENACCOUNT
27. Read thoroughly → PERUSE
29. Rowing implement → OAR
30. "Madam, I'm ___" → ADAM
31. Emu relative → RHEA
35. Locks up → CAGES
39. Lower, as the lights → DIM
40. Hip person, in old slang → COOLCAT
42. Genre for Cardi B or LL Cool J → RAP
43. Curry of the N.B.A., informally → STEPH
45. Boat tie-up location → PIER
46. Tortilla ingredient → MASA
47. Enjoy a banquet → EAT
49. Goes over by hand, as a drawing → TRACES
51. Antithesis → POLAROPPOSITE
57. "I've solved it!" → AHA
58. Creator of Asteroids and Pong → ATARI
59. "You should come foraging with me, because I'm a ___" (bad pun) → FUNGI
62. Assigned stars, say → RATED
64. Cause of some wintry weather ... or a hint to 17-, 24-, 40- and 51-Across → COLDFRONT
66. Woman who bests Sherlock in "A Scandal in Bohemia" → IRENE
67. Largest joint in the body → KNEE
68. Some airport listings, for short → ETAS
69. Sends an eggplant emoji, say → SEXTS
70. Feudal underling → SERF
71. Fresh and glowing, in skin-care terminology → DEWY