Theme: One Clue - And all synonyms of the euphemistic meaning of the word.
17A. Rubbish : "BALDERDASH!"
21A. Rubbish : "HOGWASH!"
23A. Rubbish : "MOONSHINE!"
35A. Rubbish : "HORSEFEATHERS!"
51A. Rubbish : "POPPYCOCK!"
53A. Rubbish : "TWADDLE!"
57A. Rubbish : "APPLESAUCE!"
Argyle here. I could almost hear Col. "Sherm" Potter exclaiming them as I typed.
Sixty-five squares used for the theme. The long fill was in the columns and interesting in their own right. Excellent!
Across:
1. Wall calendar page : MONTH
6. Gimlet garnish : LIME and 14A. Martini garnish : OLIVE
10. Gangster weapons : GATs. A shortening of Gatling gun.
15. Everglades denizen, for short : CROC. A shortening of crocodile.
16. Muffin spread : OLEO
19. Rush-order letters : ASAP
20. Words of commitment : "I DO"
28. Speed contests : RACES. Two big ones on last Sunday.
29. Make, as a DVD copy : BURN
30. Expressive rock music subgenre : EMO
31. Speaker : SAYER. I'll leave it to Yellowrocks to find it in common use.
32. Teen's skin concern : ACNE
33. Lowest deck on a ship : ORLOP
41. __ zone: restricted air space : NO FLY
42. Understands : GETS
44. Colorado skiing destination : ASPEN
47. Help on stage : CUE
49. Pesky insect : GNAT
50. Psychologist Alfred : ADLER. 1870–1937, Austrian, founder of the school of individual psychology. (Looks like someone from Central Casting.)
55. Musical sensitivity : EAR
56. Cantina hors d'oeuvre : TAPA
63. Anemia treatment : IRON
64. Shipwreck survivor's refuge : ISLE
65. "Don't worry!" : "IT'S OK!"
66. Penny : CENT
67. "The Wanderer" singer : DION
68. Witherspoon of "Legally Blonde" : REESE
Down:
1. Unruly crowd : MOB
2. Suffix with plug : OLA
3. Zero, in soccer scores : NIL
4. Convenient meal named for what it was designed to be eaten in front of : TV DINNER
5. Listens to : HEEDS
6. Calculator readout, briefly : LCD. (liquid crystal display)
7. CPA's recommendation : IRA
8. Six-Day War statesman Dayan : MOSHE
9. Letter between Delta and Foxtrot : ECHO
10. "Skedaddle!" : "GO AWAY!"
11. Former German territory __-Lorraine : ALSACE
13. Second-year students : SOPHS
18. Architect Mies van der __ : ROHE. Regarded as one of the pioneering masters of modern architecture.
The Seagram building.
22. Sales meeting aid : GRAPH
23. CEO's degree : MBA
24. Pained cry : "OUCH!"
25. Yes-__ question : OR NO
26. "See ya!" : "I'M OFF!"
27. Electric shaver brand : NORELCO
31. Boozehound : SOT
34. Short basketball shot : LAY-UP
36. Wooden Mortimer : SNERD
37. Ages and ages : EON
38. Foam pad style resembling a dairy case container : EGG CRATE
39. City near Lake Tahoe : RENO
40. Legato's opp., in music : STAC. (staccato)
43. NASDAQ buy : STK. (National Association of Securities Dealers Automated Quotations System / stock) and 61. NASDAQ listings : COs. (companies)
44. Invasive apps : ADWARE. Also known as malware.
45. Apply liberally and carelessly : SLAP ON. Didn't forget the sunscreen, did you?
46. Grammar stickler, e.g. : PEDANT
48. Fencing weapon : ÉPÉE
50. Top room : ATTIC
51. Cola Wars cola : PEPSI
52. Arafat of the 58-Down : YASIR 58-Down. West Bank gp. : PLO. (Palestine Liberation Organization )
54. __-back: relaxed : LAID
59. Thriller writer Deighton : LEN
60. Apply : USE
62. __ out a living : EKE
Argyle