Puzzle

ACROSS

  1 One who is done for

  6 Really messy room

  9 Water balloon sound

 14 Smell of holiday cookies, for instance

 15 ___ moment

 16 Wear down

 17 Common drying agent in packaging (see letters 6 to 8 in this answer)

 19 Admit to knowing

 20 Combined, as funds

 21 Rings out

 23 End of an ultimatum

 24 Kimono sash

 26 Get ready to eat a kid's meal?

 30 Civil rights activist Ruby

 31 Waste little by little (6 to 8)

 33 Ukrainian port

 34 "Your highness"

 35 Fellow associate

 38 Like owls' feet

 41 Word within "Miami-Dade"

 42 Cowardly

 44 Toronto is on its shore (4 to 6)

 47 Stir in

 50 What a go-getter is often full of

 51 Eavesdropping org.

 52 City in northwestern Pennsylvania

 53 Less constrained

 55 Certain unpopular collector

 57 California/Nevada resort area, informally

 60 Millenniums, for instance ... or a hint to the hidden words in 17-, 31- and 44-Across

 62 Says with conviction

 63 Unduly

 64 Tubular pasta

 65 Beginnings of ideas

 66 20 dispenser

 67 More cunning

DOWN

  1 Sounded shocked

  2 Yankee's Baltimore rival

  3 Win-win

  4 "J'accuse...!" writer Zola

  5 Drive very fast

  6 What old mattresses do

  7 Maximally unpleasant situation

  8 University where the Clintons met

  9 Vendor

 10 Spring training time

 11 Realtor's bare-bones offering

 12 Brouhaha

 13 Highest point value for a Scrabble tile

 18 Placed on a pedestal

 22 Dined

 25 Split in two

 27 Romulus or Remus

 28 Arctic or snowshoe animal

 29 Gave the once-over

 31 Medication-approving org.

 32 Turkic people (STRATA anagram)

 33 Catalog insert

 35 NASCAR legend Yarborough

 36 Saudi Arabia neighbor

 37 Karaoke need, informally

 39 Fly a plane

 40 Sign of summer?

 43 Went wild

 45 Fiona in "Shrek," for one

 46 December 31, briefly

 47 Big name in Italian fashion

 48 Senator Feinstein

 49 More tightly packed

 52 Kick out of school

 54 Jones or James of jazz

 56 Snakes by the Nile

 57 Playground game with a lot of running

 58 Usually broad road: Abbr.

 59 That sow

 61 Eve, for Cain and Abel

Solution