Puzzle

 ACROSS

  1 Dressed like a superhero

  6 Wildly out of control

 10 Dentist's directive

 14 By oneself

 15 Like venison

 16 Approximately

 17 *Party whose gifts are mostly for someone who hasn't arrived yet?

 19 Women's rights advocate Lucretia

 20 Superior, e.g.

 21 Unexpected problem

 23 Moving vehicle?

 24 Zeta follower

 26 Greed or lust

 28 Out of the way

 30 "The Big ___ Theory"

 32 *1954 thriller set in an apartment complex

 36 Mother hen's offspring

 38 Early deliveries

 39 Sweet or savory Irish loaf

 41 Latin dance popular in the '60s

 43 Classic wafer brand

 47 *What may make a square breakfast?

 49 Regretted

 50 Very angry

 51 Not many

 53 Thin pretzel shape

 54 Squid's defense

 55 Chatters

 59 Sunrise direction

 61 Thwart

 63 *Threatening water level

 67 ___ particular order

 68 Glow that surrounds "Ace Ventura"?

 69 Emulate Cassatt or Kahlo

 70 Grassroots initiative for spreading ideas

 71 Smell terrible

 72 Harmonizes

DOWN

  1 Lyft alternative

  2 Pie ___ mode

  3 Pepper used in chile relleno

  4 One-named Irish singer

  5 Classroom furniture

  6 Long, long ___

  7 Gaping mouths

  8 Good or bad sign

  9 Sedgwick of "Brooklyn Nine-Nine"

 10 "Pah" lead-in

 11 Supply

 12 Los ___ Unidos

 13 Unoriginal

 18 Person in a will

 22 Neil who wrote "Stardust"

 24 Recede

 25 Road covering

 27 Kathmandu resident

 29 More disparaging

 31 Become lenient

 33 ___ Day (holiday for planting trees)

 34 Put new shingles on, say

 35 Diminutive

 37 Sharp turn on a golf course

 40 Daniel ___ Kim of "Lost"

 41 Without exception

 42 Similar in nature

 44 Agatha Christie novel subtitled "Poirot's Last Case," or what can follow the starred answers' last words

 45 Top exec

 46 Like 3, 5 or 35

 47 Nintendo "exergaming" product

 48 Requirement

 52 Hornets and yellow jackets

 56 In the distance

 57 Navy, for example

 58 Like a bad loser

 60 Remain

 62 Bagel-and-cream cheese topper

 64 Wine-flavoring wood

 65 Health products chain

 66 UFO pilots

Solution