Puzzle

 ACROSS

  1 Poison shrub

  6 Paul of "Avengers: Endgame"

 10 Controversial crop letters

 13 Montoya in "The Princess Bride"

 14 Furniture giant

 15 House for bros

 16 White sale buy

 17 *"Feel free"

 19 Inc., across the pond

 20 Henri's "very"

 22 Actress Witherspoon

 23 City fooled by a wooden horse

 24 Burn slowly

 26 *Joker catchphrase

 30 Muss up, as a tablecloth

 31 The "A" of IRA: Abbr.

 32 Shot that often gets smashed

 35 Circle segments

 36 Like a fast walk

 38 Hilo shindig

 39 Bake sale org.

 40 Paint layer

 41 Jeers

 43 *Alternate title for "December, 1963"

 45 Library work stations

 48 Barristers' headwear

 49 Novelist Walker

 50 He won three World Cups

 51 ___ for apples

 54 *"The Golden Girls" star

 57 Eric Clapton classic

 59 Red or black insects

 60 Seniors' organization

 61 Apple MP3 players

 62 ___ & Perrins

 63 Tournament passes

 64 Dice, for example

DOWN

  1 Cat's sunning spot

  2 Military subdivision

  3 Look after

  4 Sit in a wine cellar

  5 Have power over

  6 Chophouse selection

  7 Small strings, briefly

  8 AOC, for one

  9 Mother's ___

 10 Selfish drive

 11 Cue shot with a curve

 12 Weasel's aquatic cousin

 15 Provides energy for

 18 Do a tiling job

 21 Annual game with a flowery name

 23 Baking amts.

 24 Unleashes (on)

 25 Fancy nonalcoholic drink

 26 Shawl

 27 Injured

 28 Apt workout song

 29 Yogurt-based Indian condiment

 32 Pulmonary organ

 33 Hippocratic, for one

 34 Upper body sculpture

 37 Pep rally cries

 38 San ___ Obispo

 40 Tide alternative

 42 How harp music sounds

 43 Black-and-white predators

 44 Pipsqueaks

 45 Band of conspirators

 46 Coeur d'___

 47 Calf roper's rope

 50 Unadul-terated

 51 Invitation advisory, or a homophonic hint to the starred answers' starts

 52 Shoppe sign word

 53 Low clef

 55 Q key neighbor

 56 Stable fare

 58 Kwik-E-Mart proprietor

Solution