puzzle

 ACROSS



  1 Ethane or methane

  4 Move like a supermodel

  9 Little League gloves

 14 Play a part, or part of a play

 15 Give an address

 16 Allergy season sound

 17 Vote in favor

 18 French city known for its mustard

 19 Commit to memory

 20 Leftover bit

 22 Part of an Instagram feed

 24 One may be sprayed on

 25 Easy-___ Oven

 26 French wine valley

 28 Like an uncleaned barbecue

 29 Standing upon

 30 Grp. that monitors pollution

 31 Diva's chance to shine

 33 Weightiness

 34 Lion's lair

 35 '60s Supreme Court justice Abe

 38 Dreamed big

 40 Flips one's lid

 41 Type that's not upstanding?

 42 Texas Longhorn's sound

 43 Clear on a snowy day?

 44 Vampire's target

 45 Use a plus sign

 46 ___ known as

 47 Secretly emails

 49 Be part of reality

 51 Toonie, e.g.

 52 Crossword solver's cry

 53 Organization that seeks pledges?

 54 Not subtle

 56 Cyclist

 58 "Jerry Maguire" director Cameron

 60 ___ sum

 62 Alternative to Advil

 63 Doctrine

 64 Peron who was Argentina's first lady

 65 Change back to zero

 66 They stink

 67 Roulette color

DOWN

  1 Like Alvin Ailey or Lil Nas X

  2 Gets 100% on an exam

  3 IHOP offering

  4 Word after "club" or "cream"

  5 Sandwich that shares a name with an apartment building style

  6 "The Big Bang Theory" astrophysicist

  7 Like a perfect world

  8 George Michael, vocally

  9 Ingredient in the candy Whoppers

 10 Champagne bucket filler

 11 "Not sure it's possible," or an observation about 3-, 5- or 23-Down

 12 Bat mitzvah text

 13 Young fella

 21 Cold-blooded critters

 23 One may contain crab legs

 25 Faith founded in Persia

 27 Column with a view

 28 Where planes can fly

 32 Expensive eggs

 36 Second most common blood type

 37 Affix, as a patch

 39 The Cars' Ocasek

 40 Jupiter and Saturn

 42 Headwaiter

 47 Literary king of the elephants

 48 Santiago's country

 50 Crafter's knife brand

 53 Lose sleep (over)

 55 Docs for dachshunds

 57 Day before the big day

 59 Anti-war activist Yoko

 61 Longtime satirical magazine

solution