puzzle

 ACROSS

  1 Goofs

  5 Teen's unsettling feeling

 10 Not right at all?

 14 "No ice"

 15 Kind of, informally

 16 Actress Falco

 17 Food that bookends "Tabasco"

 18 Signs of sadness

 19 Burst of wind

 20 Thin line of facial hair

 23 She/___

 24 Tea brand

 25 Sign of summer?

 27 Dinghy propellers

 31 Parking space, or a parking space's place

 32 PC gamer's controls

 35 Fish related to a walleye

 39 Blu-ray storage device

 40 Antidotes

 42 Prefix with "dynamic"

 43 Mocking expression

 45 What you'll need at the ATM, redundantly

 47 William Tell's forte

 49 Bunches and bunches

 50 Kylo ___ ("Star Wars" villain)

 51 Small Chinese dumpling

 54 CSI team's find

 56 "That's fair to say," and a clue to the starts of 20-, 32- and 45-Across

 61 Prefix with "potent"

 62 Wed

 63 Menu with a Copy command

 65 "Arsenic and Old ___"

 66 Lime relative

 67 Relinquish

 68 "Who ___?" ("Isn't that surprising?")

 69 Flower holders?

 70 Where the forbidden fruit grew

DOWN

  1 Tonsillitis doc

  2 Gather in

  3 Speedy animal such as Man o' War

  4 What David slung at Goliath

  5 Italian sparkling wine region

  6 Playwright Coward

  7 Mom's mom, e.g.

  8 Walk with swagger

  9 Fez or loafer feature

 10 Group of attorneys

 11 Elicit

 12 Like a red herring

 13 Head, in France

 21 Brag

 22 'Vette roof option

 25 Some Scottish children

 26 Name contained in "tangerine"

 28 Dog show org.

 29 Sign on again

 30 Home to Damascus

 33 Beach house asset

 34 Email folder

 36 Adopted a new logo, say

 37 Canadian First Nations tribe

 38 Brass instrument, perhaps

 41 ___-Caps

 44 Bat or bar mitzvah

 46 "Reverse that" command

 48 Skiers' challenges

 51 Spelman or Smith student

 52 "There isn't an ___ of truth to that"

 53 Octet plus one

 55 Medea, to Circe

 56 Egg part

 57 What keeps everything from happening at once, some say

 58 Particle that may be smashed

 59 Writes

 60 It ebbs and flows

 64 Olympic gymnastics score first achieved by Nadia Comaneci

solution