puzzle

 ACROSS

  1 Self-righteous killjoy

  5 Story lines

  9 Clumps of hair

 14 Raise, as a child

 15 Like healthier beef

 16 Harden (to)

 17 Part of your seat that a thriller has you on

 18 City where the Nobel Peace Prize is awarded

 19 Catwalker

 20 Reason to skip a conference call

 23 Gadot who portrays Diana Prince

 24 Young chaps

 25 Rains icy pellets

 27 Chip with a Nacho Cheese flavor

 30 When repeated, "Amen!"

 31 ___ Man (red-and-gold superhero)

 32 Market research panel

 38 Test that some colleges don't require

 39 Afflict

 40 Code of life

 41 Suspicious mouse activity, perhaps

 46 Tantrums

 47 ___ ex machina

 48 Some are heavier than hippos

 50 Self-sacrificing sort

 53 Membership level

 54 Actor Butterfield

 55 Spend very little time chilling?

 61 Egyptian capital

 63 Vegetable used for some red dyes

 64 Solemnly swear

 65 Rapper's improvisation

 66 Showed up

 67 Least possible amount

 68 They can sting more than once

 69 Cafeteria tray, perhaps, in the winter

 70 Low digits

DOWN



  1 USA's leader

  2 Ctrl+Y, on a PC

  3 "Othello" antagonist

  4 Imaginary mischief-maker

  5 "Get ___ this!" ("Check it out!")

  6 Musical pauses

  7 Home to San Fran

  8 Make out, in Manchester

  9 Interval between cause and effect

 10 Card game whose name is shouted

 11 Misrepresent, as figures

 12 Award after Best in Show?

 13 Successfully markets

 21 Marbling

 22 Avails oneself of

 26 Go wrong

 27 The "D" in CD

 28 Like some histories

 29 Naan alternative

 30 "Nomadland" streamer

 33 Rowers' implements

 34 Espionage org.

 35 Father of Thor

 36 "Do ___ others ..."

 37 Get through a difficult course

 42 Chicago summer hrs.

 43 Electronic entry gadgets

 44 Prepare to store, as a flag

 45 Strayed

 46 Insect with a burning bite

 49 She/___ pronouns

 50 Long-tailed parrot

 51 Carne ___

 52 Bars under bar cars

 53 Many a crossword has one

 56 Basics

 57 Make airtight

 58 Acronym for a dressing ingredient

 59 Intense state of focus

 60 Fleecy females

 62 Jeans feature that may be intentional

solution