puzzle

ACROSS

  1 Knife type named for an Alamo fighter

  6 Leg support used by FDR

 11 Snitch

 14 2016 animated film set in Polynesia

 15 "?%@#" and others

 16 "Selma" director DuVernay

 17 Pale from fright (Hint: Look down at this answer's 4th letter)

 19 Lion habitat

 20 Grand ___ National Park

 21 Out of control, like a fire

 23 Fisher of "Wedding Crashers"

 25 Substitute "th" for "s," perhaps

 28 "Othello" villain

 29 Hot corner, in baseball

 31 They're neither right nor obtuse (... 4th letter)

 34 50-50 chance

 36 Butter substitute

 37 Nevertheless

 38 Spot to doodle in the office

 40 Poor-quality

 43 Rhythm

 44 Yousafzai who won a Nobel Prize at 17

 46 Reluctant convert to technology (... 3rd letter)

 51 Big cat of Bengal

 52 Pi r squared, for a circle

 53 Greek god of love

 55 What vacuums do

 56 Dad's dad

 59 Barista's art medium

 61 U.S. troops

 62 Reveal juicy gossip, or what 17-, 31- and 46-Across do

 67 December 24, e.g.

 68 Sudden voltage increase

 69 Ready to pour

 70 ___ Moines

 71 Walk (on)

 72 Consume fully


DOWN

  1 Car co. based in Munich

  2 ___ and aah

  3 Backup college admissions pool

  4 Sobbing

  5 Toward sunrise

  6 Land next to Herzegovina

  7 Cheerleader's cheer

  8 Polished off

  9 One-named singer who had a No. 1 hit at 52

 10 "Como ___?"

 11 Type of symmetry for a starfish

 12 Exact retribution for

 13 Argentine dances

 18 "You've got mail" ISP

 22 Job for a musician

 23 Eensy

 24 Something in the closet with its tongue out?

 26 Vespa vehicle

 27 Orange juice option

 30 Disney elephant

 32 Heat or Thunder, e.g.

 33 Greet with a head motion

 35 Chick noise

 39 Captain's subordinate

 40 Elongated French loaf

 41 Guinness of "Star Wars"

 42 Without light

 45 Lends an ear

 46 Fell behind

 47 Get there

 48 Says "Nyah, nyah!" to, maybe

 49 Grand Coulee ___

 50 Like a pinwheel sandwich

 54 Formed a lap

 57 "Over here!"

 58 Cowboy boot accessory

 60 $1,000, slangily

 63 Red state?

 64 Airport near JFK

 65 ___ de parfum

 66 TikTok, e.g.

solution