ACROSS

  1 Witness' spot

  6 Great songs, informally

 10 "If the shoe ___ ..."

 14 Detoxifying organ

 15 Up to the task

 16 It fills un lago

 17 Inaccurate signoff on a walkie-talkie

 19 Accurate response to 17-Across

 20 Scrabble and Boggle

 21 Encrypted URL start

 22 Hush-hush grp

 23 Freetown, Sierra ___

 24 Trickery

 31 Unexpressed

 32 Sleep and shelter

 33 Only even prime number

 34 Domain

 35 Is flexible

 36 "From hell's heart I stab at thee" speaker in "Moby-Dick"

 37 Apt name for a mamma?

 38 "Thanks," in Toulouse

 39 Church topper

 40 It goes in circles but gets to the point

 43 Painter whose name appears backward in "oat milk"

 44 "I disapprove!"

 45 Express aloud

 46 Fruit sphere in a cocktail

 52 It becomes another name when H's are added to its ends

 53 Eclair seller

 54 Examined the license of, e.g.

 55 Treasure ___

 56 "44"

 57 Director Ephron

 58 Cameron of "Shrek"

 59 Concrete support



DOWN

  1 ___ as molasses

  2 DVR brand

  3 Declare

  4 Pi Day celebrant, maybe

  5 Sergeant Friday's classic show

  6 What interrupting demonstrates

  7 Instrument with a three-vowel name

  8 It shares a key with equals

  9 Play backdrop

 10 1, 3 or 9, to 9

 11 "Couldn't tell ya!"

 12 Containers that "burp" when sealed

 13 Verbalizes

 18 High-minded org.?

 21 Possessive for Batwoman

 23 Skid ___ (helmets, slangily)

 24 Word after "food" or "forever"

 25 She only keeps things that spark joy

 26 Carnival property?

 27 Sportage automaker

 28 Judi in "Skyfall"

 29 Hype campaign

 30 Far from hammered

 35 Karate wear

 36 Human, for one

 38 Performer who may pretend to be in a box

 39 Back with cash

 41 Insect whose buzz can reach 106.7 decibels

 42 They jump up Down Under

 45 Egotistical

 46 "Moana" character or Hawaiian island

 47 Sicilian mount

 48 Pop singer Rexha

 49 Part of UAE

 50 Peru's capital

 51 Shakespearean king

 53 A great degree?

Solution