puzzle

ACROSS

  1 Tiff

  5 Little marcher

  8 The "M" of STEM

 12 Diva's solos

 14 Sticky stuff

 15 Magazines, radio and the like

 16 *Many HQ staffers

 19 ___-Cat (winter vehicle)

 20 Post-OR destination

 21 *GP, e.g.

 30 "OMG, sooo funny!!"

 31 Parasitic sort

 32 Just barely

 33 Sleep concern

 35 D.C. baseball player

 36 This puzzle's will soon be revealed!

 37 Chiding sound

 38 *The "P" of PVC

 41 Guys

 42 Joke on a valentine, often

 43 Refinery shipment

 45 *One may have "ESQ" on their business card

 50 ___ it on the line

 51 "Yipes!"

 52 Bunk option

 54 I-, O-- or N---

 55 Coffee add-in

 57 ChapStick target

 59 "Behave!," or a hint to the letter changes needed to understand the starred clues

 64 Talk and talk and talk

 65 Like volcanic rock

 66 Buggy releases

 67 Trio of trios


DOWN

  1 Pollen pouch

  2 Paid athlete

  3 What a biathlete takes

  4 Piece of clicking footwear

  5 Six or seven, for a first- grader, often

  6 Neither companion

  7 AAA job

  8 Jewish scroll in a case

  9 Ax relative: Var.

 10 Ascot, e.g.

 11 Owns

 13 Gold medal-winning gymnast Lee

 15 Shiny mineral in some makeup

 17 A rock, for a crow, sometimes

 18 Word after "sky" or before "seas"

 21 ___ Stanley (traveler in an envelope)

 22 Hypes (up)

 23 Dropped, like spirits

 24 "99 Luftballons" singer

 25 "Square" part of a diet

 26 Play's first section

 27 Checkout line unit

 28 Jay or Joy

 29 Genesis garden

 34 Pool's hue

 36 Banks on a runway

 39 One leader?

 40 Doll, e.g.

 42 Tissue box word

 44 Tolkien's Treebeard, for one

 45 Finds it impossible

 46 Any episode of "I Love Lucy," now

 47 Turn suddenly

 48 Animal in the family Giraffidae

 49 Tattled about

 50 Valley called the "Garden of France"

 53 Stimulate

 54 Site with a "What to Watch" guide

 55 Sound from a baby

 56 Flavor enhancer: Abbr.

 58 (I have a secret to share!)

 60 It's in your genes

 61 Desired answer to "Will you marry me?"

 62 Raggedy Andy's sister

 63 Keanu's role in "The Matrix"

solution