ACROSS

  1 They're virtually worthless

 11 That's counterpart

 15 Veggies used in salsa verde

 16 ___ Raton (Ariana Grande's birthplace)

 17 Changes 3.14 to 3, say

 18 Acronym for physics, algebra, etc.

 19 Ish

 20 Command with a floppy disk icon

 21 TikTok and Twitter, for two

 22 Docking platforms

 24 Therefore

 26 Green-lights

 28 (Cracks knuckles) "Challenge accepted!"

 31 ___ Bo (fitness system)

 32 Haphazard

 36 Add oxygen to

 38 Floral garlands

 39 Insult good naturedly

 41 Agenda unit

 42 "That was my best shot!"

 44 One-legged asana in yoga

 46 Main animal in "Animal Farm"

 47 Modern portraits

 49 Name that's an alphabet sequence

 50 Huey, Dewey and Louie, for one

 51 White stuff in a White Russian, often

 56 Isolate at the office

 58 Whiny kid

 61 Roof edge

 62 Multiplatinum Rihanna album

 63 Musical shifts

 65 Unwanted stocking stuffer

 66 People outside the Stonewall Inn in 1969, e.g.

 67 Out of whack

 68 Event a fraternity may throw

DOWN

  1 Razor sharpener

  2 One spelling for a deep-fried Indian bread

  3 Tickle

  4 Stately home

  5 Fifteen mins after boarding, say

  6 Fail to hit

  7 Alan of "The West Wing"

  8 "Great to hear, friend!"

  9 Opposite of "raises"

 10 IRS ID

 11 Olive oil meas.

 12 Vegetable that kids pass on?

 13 Cutting-edge hockey equipment?

 14 "iCarly" character

 21 Top-notch

 23 Grassy surface

 25 Pointed beard

 27 Rhyming note on a failed test

 29 Like a black diamond run, vis-a-vis a blue square run

 30 Equal: Prefix

 32 Ignores a Caution Wet Floor sign, maybe

 33 When tripled, a holiday song

 34 Lightest instrument?

 35 Trident-shaped Greek letter

 37 Tear

 40 ___ Lanka

 43 11-Across, in Spanish

 45 "Exit full screen" key

 48 Volleyball position, or Italian for "free"

 52 Oscar de la ___ (Dominican designer)

 53 Itching to go

 54 Stave off

 55 Full of drama

 57 Flower by a pad

 59 Play group?

 60 Rap's Megan ___ Stallion

 62 Obama health law: Abbr

 63 Speed meas. in Kenya

 64 Egyptian snake

Solution